Project Number Date
cypher-for-gremlin 0.9.9 07 Jun 2018, 12:04

Feature Report

Steps Scenarios Features
Feature Passed Failed Skipped Pending Undefined Total Passed Failed Total Duration Status
KeysAcceptance 40 2 0 0 0 42 7 2 9 0.407 Failed
Feature KeysAcceptance
0.025
Given an empty graph 0.000
And having executed: 0.003
CREATE ({name: 'Andres', surname: 'Lopez'})

12:03:20.738 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE ({name: 'Andres', surname: 'Lopez'}) 12:03:20.739 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV().property('name', 'Andres').property('surname', 'Lopez').barrier().limit(0)

When executing query: 0.003
MATCH (n)
UNWIND keys(n) AS x
RETURN DISTINCT x AS theProps

12:03:20.759 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND keys(n) AS x RETURN DISTINCT x AS theProps 12:03:20.762 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().properties().key().project('theProps').by(__.identity()).dedup()

Then the result should be: 0.000
theProps
'name'
'surname'
And no side effects 0.018

12:03:20.762 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) RETURN id(n) 12:03:20.764 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().project('id(n)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:20.765 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r]->() RETURN id(r) 12:03:20.768 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' cypher.path.start.GENERATED1').outE().as('r').inV().select('r').project('id(r)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:20.771 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND labels(n) AS label RETURN DISTINCT label 12:03:20.773 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().label().is(neq('vertex')).project('label').by(__.identity()).dedup() -labels: 0 +labels: 0 +nodes: 0 -nodes: 0 -properties: 0 +properties: 0 -relationships: 0 +relationships: 0

0.049
Given an empty graph 0.000
And having executed: 0.004
CREATE ({name: 'Andres', surname: 'Lopez'}),
       ({otherName: 'Andres', otherSurname: 'Lopez'})

12:03:20.782 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE ({name: 'Andres', surname: 'Lopez'}), ({otherName: 'Andres', otherSurname: 'Lopez'}) 12:03:20.784 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV().property('name', 'Andres').property('surname', 'Lopez').addV().property('otherName', 'Andres').property('otherSurname', 'Lopez').barrier().limit(0)

When executing query: 0.005
MATCH (n)
UNWIND keys(n) AS x
RETURN DISTINCT x AS theProps

12:03:20.830 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND keys(n) AS x RETURN DISTINCT x AS theProps 12:03:20.833 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().properties().key().project('theProps').by(__.identity()).dedup()

Then the result should be: 0.000
theProps
'name'
'surname'
'otherName'
'otherSurname'
And no side effects 0.039

12:03:20.835 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) RETURN id(n) 12:03:20.839 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().project('id(n)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:20.840 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r]->() RETURN id(r) 12:03:20.851 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' cypher.path.start.GENERATED1').outE().as('r').inV().select('r').project('id(r)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:20.859 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND labels(n) AS label RETURN DISTINCT label 12:03:20.863 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().label().is(neq('vertex')).project('label').by(__.identity()).dedup() -labels: 0 +labels: 0 +nodes: 0 -nodes: 0 -properties: 0 +properties: 0 -relationships: 0 +relationships: 0

0.067
Given an empty graph 0.000
And having executed: 0.004
CREATE ()

12:03:20.876 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE () 12:03:20.878 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV().barrier().limit(0)

When executing query: 0.012
MATCH (n)
UNWIND keys(n) AS x
RETURN DISTINCT x AS theProps

12:03:20.922 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND keys(n) AS x RETURN DISTINCT x AS theProps 12:03:20.925 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().properties().key().project('theProps').by(__.identity()).dedup()

Then the result should be: 0.000
theProps
And no side effects 0.050

12:03:20.934 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) RETURN id(n) 12:03:20.938 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().project('id(n)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:20.939 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r]->() RETURN id(r) 12:03:20.942 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' cypher.path.start.GENERATED1').outE().as('r').inV().select('r').project('id(r)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:20.947 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND labels(n) AS label RETURN DISTINCT label 12:03:20.951 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().label().is(neq('vertex')).project('label').by(__.identity()).dedup() -labels: 0 +labels: 0 +nodes: 0 -nodes: 0 -properties: 0 +properties: 0 -relationships: 0 +relationships: 0

0.044
Given an empty graph 0.000
And having executed: 0.012
CREATE ()

12:03:20.987 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE () 12:03:20.991 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV().barrier().limit(0)

When executing query: 0.005
OPTIONAL MATCH (n)
UNWIND keys(n) AS x
RETURN DISTINCT x AS theProps

12:03:21.032 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: OPTIONAL MATCH (n) UNWIND keys(n) AS x RETURN DISTINCT x AS theProps 12:03:21.034 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.inject(' cypher.start').coalesce(__.V(), __.constant(' cypher.null')).properties().key().project('theProps').by(__.identity()).dedup()

Then the result should be: 0.000
theProps
And no side effects 0.025

12:03:21.038 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) RETURN id(n) 12:03:21.040 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().project('id(n)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.040 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r]->() RETURN id(r) 12:03:21.044 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' cypher.path.start.GENERATED1').outE().as('r').inV().select('r').project('id(r)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.047 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND labels(n) AS label RETURN DISTINCT label 12:03:21.050 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().label().is(neq('vertex')).project('label').by(__.identity()).dedup() -labels: 0 +labels: 0 +nodes: 0 -nodes: 0 -properties: 0 +properties: 0 -relationships: 0 +relationships: 0

0.031
Given an empty graph 0.000
And having executed: 0.005
CREATE ()-[:KNOWS {level: 'bad', year: '2015'}]->()

12:03:21.064 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE ()-[:KNOWS {level: 'bad', year: '2015'}]->() 12:03:21.065 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV().as(' UNNAMED8').addV().as(' UNNAMED50').addE('KNOWS').from(' UNNAMED8').to(' UNNAMED50').property('level', 'bad').property('year', '2015').barrier().limit(0)

When executing query: 0.005
MATCH ()-[r:KNOWS]-()
UNWIND keys(r) AS x
RETURN DISTINCT x AS theProps

12:03:21.088 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r:KNOWS]-() UNWIND keys(r) AS x RETURN DISTINCT x AS theProps 12:03:21.091 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' UNNAMED7').bothE('KNOWS').as('r').otherV().as(' UNNAMED20').dedup(' UNNAMED7', 'r', ' UNNAMED20').select('r').properties().key().project('theProps').by(__.identity()).dedup()

Then the result should be: 0.000
theProps
'level'
'year'
And no side effects 0.020

12:03:21.093 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) RETURN id(n) 12:03:21.095 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().project('id(n)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.096 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r]->() RETURN id(r) 12:03:21.099 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' cypher.path.start.GENERATED1').outE().as('r').inV().select('r').project('id(r)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.101 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND labels(n) AS label RETURN DISTINCT label 12:03:21.103 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().label().is(neq('vertex')).project('label').by(__.identity()).dedup() -labels: 0 +labels: 0 +nodes: 0 -nodes: 0 -properties: 0 +properties: 0 -relationships: 0 +relationships: 0

0.029
Given an empty graph 0.000
And having executed: 0.003
CREATE ()-[:KNOWS]->()

12:03:21.114 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE ()-[:KNOWS]->() 12:03:21.116 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV().as(' UNNAMED8').addV().as(' UNNAMED21').addE('KNOWS').from(' UNNAMED8').to(' UNNAMED21').barrier().limit(0)

When executing query: 0.005
MATCH ()-[r:KNOWS]-()
UNWIND keys(r) AS x
RETURN DISTINCT x AS theProps

12:03:21.137 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r:KNOWS]-() UNWIND keys(r) AS x RETURN DISTINCT x AS theProps 12:03:21.140 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' UNNAMED7').bothE('KNOWS').as('r').otherV().as(' UNNAMED20').dedup(' UNNAMED7', 'r', ' UNNAMED20').select('r').properties().key().project('theProps').by(__.identity()).dedup()

Then the result should be: 0.000
theProps
And no side effects 0.019

12:03:21.143 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) RETURN id(n) 12:03:21.145 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().project('id(n)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.146 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r]->() RETURN id(r) 12:03:21.148 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' cypher.path.start.GENERATED1').outE().as('r').inV().select('r').project('id(r)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.149 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND labels(n) AS label RETURN DISTINCT label 12:03:21.151 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().label().is(neq('vertex')).project('label').by(__.identity()).dedup() -labels: 0 +labels: 0 +nodes: 0 -nodes: 0 -properties: 0 +properties: 0 -relationships: 0 +relationships: 0

0.038
Given an empty graph 0.000
And having executed: 0.003
CREATE ()-[:KNOWS]->()

12:03:21.164 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE ()-[:KNOWS]->() 12:03:21.165 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV().as(' UNNAMED8').addV().as(' UNNAMED21').addE('KNOWS').from(' UNNAMED8').to(' UNNAMED21').barrier().limit(0)

When executing query: 0.008
OPTIONAL MATCH ()-[r:KNOWS]-()
UNWIND keys(r) AS x
RETURN DISTINCT x AS theProps

12:03:21.188 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: OPTIONAL MATCH ()-[r:KNOWS]-() UNWIND keys(r) AS x RETURN DISTINCT x AS theProps 12:03:21.192 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.inject(' cypher.start').coalesce(__.V().as(' UNNAMED16').bothE('KNOWS').as('r').otherV().as(' UNNAMED29').dedup(' UNNAMED16', 'r', ' UNNAMED29').select(' UNNAMED16', 'r', ' UNNAMED29'), __.constant(' cypher.null').as(' UNNAMED16').as('r').as(' UNNAMED29').select(' UNNAMED16', 'r', ' UNNAMED29')).as(' GENERATED2').select(' UNNAMED16').as(' UNNAMED16').select(' GENERATED2').select('r').as('r').select(' GENERATED2').select(' UNNAMED29').as(' UNNAMED29').select('r').properties().key().project('theProps').by(__.identity()).dedup()

Then the result should be: 0.000
theProps
And no side effects 0.026

12:03:21.197 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) RETURN id(n) 12:03:21.199 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().project('id(n)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.200 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH ()-[r]->() RETURN id(r) 12:03:21.203 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().as(' cypher.path.start.GENERATED1').outE().as('r').inV().select('r').project('id(r)').by(__.choose(neq(' cypher.null'), __.id(), __.constant(' cypher.null'))) 12:03:21.204 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: MATCH (n) UNWIND labels(n) AS label RETURN DISTINCT label 12:03:21.207 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.V().label().is(neq('vertex')).project('label').by(__.identity()).dedup() -labels: 0 +labels: 0 +nodes: 0 -nodes: 0 -properties: 0 +properties: 0 -relationships: 0 +relationships: 0

0.064
Scenario Using `keys()` on a literal map
Steps
Given any graph 0.048

12:03:21.224 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE (a:A {name: 'a'}), (b1:X {name: 'b1'}), (b2:X {name: 'b2'}), (b3:X {name: 'b3'}), (b4:X {name: 'b4'}), (c11:X {name: 'c11'}), (c12:X {name: 'c12'}), (c21:X {name: 'c21'}), (c22:X {name: 'c22'}), (c31:X {name: 'c31'}), (c32:X {name: 'c32'}), (c41:X {name: 'c41'}), (c42:X {name: 'c42'}) CREATE (a)-[:KNOWS]->(b1), (a)-[:KNOWS]->(b2), (a)-[:FOLLOWS]->(b3), (a)-[:FOLLOWS]->(b4) CREATE (b1)-[:FRIEND]->(c11), (b1)-[:FRIEND]->(c12), (b2)-[:FRIEND]->(c21), (b2)-[:FRIEND]->(c22), (b3)-[:FRIEND]->(c31), (b3)-[:FRIEND]->(c32), (b4)-[:FRIEND]->(c41), (b4)-[:FRIEND]->(c42) CREATE (b1)-[:FRIEND]->(b2), (b2)-[:FRIEND]->(b3), (b3)-[:FRIEND]->(b4), (b4)-[:FRIEND]->(b1); 12:03:21.244 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV('A').as('a').property('name', 'a').addV('X').as('b1').property('name', 'b1').addV('X').as('b2').property('name', 'b2').addV('X').as('b3').property('name', 'b3').addV('X').as('b4').property('name', 'b4').addV('X').as('c11').property('name', 'c11').addV('X').as('c12').property('name', 'c12').addV('X').as('c21').property('name', 'c21').addV('X').as('c22').property('name', 'c22').addV('X').as('c31').property('name', 'c31').addV('X').as('c32').property('name', 'c32').addV('X').as('c41').property('name', 'c41').addV('X').as('c42').property('name', 'c42').addE('KNOWS').from('a').to('b1').addE('KNOWS').from('a').to('b2').addE('FOLLOWS').from('a').to('b3').addE('FOLLOWS').from('a').to('b4').addE('FRIEND').from('b1').to('c11').addE('FRIEND').from('b1').to('c12').addE('FRIEND').from('b2').to('c21').addE('FRIEND').from('b2').to('c22').addE('FRIEND').from('b3').to('c31').addE('FRIEND').from('b3').to('c32').addE('FRIEND').from('b4').to('c41').addE('FRIEND').from('b4').to('c42').addE('FRIEND').from('b1').to('b2').addE('FRIEND').from('b2').to('b3').addE('FRIEND').from('b3').to('b4').addE('FRIEND').from('b4').to('b1').barrier().limit(0)

When executing query: 0.015
RETURN keys({name: 'Alice', age: 38, address: {city: 'London', residential: true}}) AS k

12:03:21.307 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: RETURN keys({name: 'Alice', age: 38, address: {city: 'London', residential: true}}) AS k 12:03:21.315 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.inject(' cypher.start').project('k').by(__.project('name', 'age', 'address').by(__.constant('Alice')).by(__.constant(38)).by(__.project('city', 'residential').by(__.constant('London')).by(__.constant(true))).properties().key().fold()) 12:03:21.319 [gremlin-server-worker-1] ERROR o.o.g.s.op.cypher.CypherOpProcessor - Error during traversal iteration java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to org.apache.tinkerpop.gremlin.structure.Element at org.apache.tinkerpop.gremlin.process.traversal.step.map.PropertiesStep.flatMap(PropertiesStep.java:51) at org.apache.tinkerpop.gremlin.process.traversal.step.map.FlatMapStep.processNextStart(FlatMapStep.java:49) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50) at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:36) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.hasNext(ExpandableStepIterator.java:42) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep.processAllStarts(ReducingBarrierStep.java:83) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep.processNextStart(ReducingBarrierStep.java:113) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:128) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:38) at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.next(DefaultTraversal.java:200) at org.apache.tinkerpop.gremlin.process.traversal.util.TraversalUtil.apply(TraversalUtil.java:43) at org.apache.tinkerpop.gremlin.process.traversal.util.TraversalUtil.applyNullable(TraversalUtil.java:75) at org.apache.tinkerpop.gremlin.process.traversal.step.map.ProjectStep.map(ProjectStep.java:55) at org.apache.tinkerpop.gremlin.process.traversal.step.map.ProjectStep.map(ProjectStep.java:40) at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:37) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50) at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:36) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:192) at org.apache.tinkerpop.gremlin.server.op.AbstractOpProcessor.handleIterator(AbstractOpProcessor.java:89) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.handleIterator(CypherOpProcessor.java:183) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.lambda$evalCypher$0(CypherOpProcessor.java:121) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.inTransaction(CypherOpProcessor.java:129) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.evalCypher(CypherOpProcessor.java:121) at org.apache.tinkerpop.gremlin.server.handler.OpExecutorHandler.channelRead0(OpExecutorHandler.java:68) at org.apache.tinkerpop.gremlin.server.handler.OpExecutorHandler.channelRead0(OpExecutorHandler.java:43) at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler$1.channelRead(WebSocketServerProtocolHandler.java:159) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1304) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:921) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:135) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:646) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131) at java.lang.Thread.run(Thread.java:748)

Then the result should be: 0.000
org.opencypher.tools.tck.api.Scenario$ScenarioFailedException: Feature "KeysAcceptance": Scenario "Using `keys()` on a literal map" failed with message: Expected: | k |
| ['name', 'age', 'address'] |, got error ExecutionFailed(TypeError,runtime,InvalidArgumentValue,Some(org.apache.tinkerpop.gremlin.driver.exception.ResponseException: java.util.LinkedHashMap cannot be cast to org.apache.tinkerpop.gremlin.structure.Element))
	at org.opencypher.tools.tck.api.Scenario$$anonfun$executeOnGraph$1.apply(Scenario.scala:95)
	at org.opencypher.tools.tck.api.Scenario$$anonfun$executeOnGraph$1.apply(Scenario.scala:60)
	at scala.collection.LinearSeqOptimized$class.foldLeft(LinearSeqOptimized.scala:124)
	at scala.collection.immutable.List.foldLeft(List.scala:84)
	at org.opencypher.tools.tck.api.Scenario.executeOnGraph(Scenario.scala:60)
	at org.opencypher.tools.tck.api.Scenario$$anon$1.execute(Scenario.scala:54)
	at org.junit.jupiter.engine.descriptor.JupiterTestDescriptor.executeAndMaskThrowable(JupiterTestDescriptor.java:145)
	at org.junit.jupiter.engine.descriptor.DynamicTestTestDescriptor.execute(DynamicTestTestDescriptor.java:46)
	at org.junit.jupiter.engine.descriptor.DynamicTestTestDescriptor.execute(DynamicTestTestDescriptor.java:24)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:83)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$0(HierarchicalTestExecutor.java:85)
	at org.junit.jupiter.engine.descriptor.TestFactoryTestDescriptor.lambda$invokeTestMethod$1(TestFactoryTestDescriptor.java:80)
	at org.junit.jupiter.engine.execution.ThrowableCollector.execute(ThrowableCollector.java:40)
	at org.junit.jupiter.engine.descriptor.TestFactoryTestDescriptor.invokeTestMethod(TestFactoryTestDescriptor.java:68)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:110)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:57)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:83)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.Iterator.forEachRemaining(Iterator.java:116)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.Iterator.forEachRemaining(Iterator.java:116)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:51)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:43)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:170)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:154)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:92)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$100(JUnitPlatformTestClassProcessor.java:77)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:73)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
	at com.sun.proxy.$Proxy1.stop(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.stop(TestWorker.java:123)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:155)
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:137)
	at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.tinkerpop.gremlin.driver.exception.ResponseException: java.util.LinkedHashMap cannot be cast to org.apache.tinkerpop.gremlin.structure.Element
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler.channelRead0(Handler.java:246)
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler.channelRead0(Handler.java:197)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinSaslAuthenticationHandler.channelRead0(Handler.java:123)
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinSaslAuthenticationHandler.channelRead0(Handler.java:67)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:94)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1304)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:921)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:135)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:646)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460)
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
	... 1 more
k
['name', 'age', 'address']
0.057
Scenario Using `keys()` on a parameter map
Steps
Given any graph 0.047

12:03:21.329 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: CREATE (a:A {name: 'a'}), (b1:X {name: 'b1'}), (b2:X {name: 'b2'}), (b3:X {name: 'b3'}), (b4:X {name: 'b4'}), (c11:X {name: 'c11'}), (c12:X {name: 'c12'}), (c21:X {name: 'c21'}), (c22:X {name: 'c22'}), (c31:X {name: 'c31'}), (c32:X {name: 'c32'}), (c41:X {name: 'c41'}), (c42:X {name: 'c42'}) CREATE (a)-[:KNOWS]->(b1), (a)-[:KNOWS]->(b2), (a)-[:FOLLOWS]->(b3), (a)-[:FOLLOWS]->(b4) CREATE (b1)-[:FRIEND]->(c11), (b1)-[:FRIEND]->(c12), (b2)-[:FRIEND]->(c21), (b2)-[:FRIEND]->(c22), (b3)-[:FRIEND]->(c31), (b3)-[:FRIEND]->(c32), (b4)-[:FRIEND]->(c41), (b4)-[:FRIEND]->(c42) CREATE (b1)-[:FRIEND]->(b2), (b2)-[:FRIEND]->(b3), (b3)-[:FRIEND]->(b4), (b4)-[:FRIEND]->(b1); 12:03:21.352 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.addV('A').as('a').property('name', 'a').addV('X').as('b1').property('name', 'b1').addV('X').as('b2').property('name', 'b2').addV('X').as('b3').property('name', 'b3').addV('X').as('b4').property('name', 'b4').addV('X').as('c11').property('name', 'c11').addV('X').as('c12').property('name', 'c12').addV('X').as('c21').property('name', 'c21').addV('X').as('c22').property('name', 'c22').addV('X').as('c31').property('name', 'c31').addV('X').as('c32').property('name', 'c32').addV('X').as('c41').property('name', 'c41').addV('X').as('c42').property('name', 'c42').addE('KNOWS').from('a').to('b1').addE('KNOWS').from('a').to('b2').addE('FOLLOWS').from('a').to('b3').addE('FOLLOWS').from('a').to('b4').addE('FRIEND').from('b1').to('c11').addE('FRIEND').from('b1').to('c12').addE('FRIEND').from('b2').to('c21').addE('FRIEND').from('b2').to('c22').addE('FRIEND').from('b3').to('c31').addE('FRIEND').from('b3').to('c32').addE('FRIEND').from('b4').to('c41').addE('FRIEND').from('b4').to('c42').addE('FRIEND').from('b1').to('b2').addE('FRIEND').from('b2').to('b3').addE('FRIEND').from('b3').to('b4').addE('FRIEND').from('b4').to('b1').barrier().limit(0)

And parameters are: 0.000
param {name: 'Alice', age: 38, address: {city: 'London', residential: true}}
When executing query: 0.009
RETURN keys($param) AS k

12:03:21.417 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Cypher: RETURN keys($param) AS k 12:03:21.421 [gremlin-server-worker-1] INFO o.o.g.s.op.cypher.CypherOpProcessor - Gremlin: g.inject(' cypher.start').project('k').by(__.coalesce(__.constant([address: [residential: true, city: 'London'], name: 'Alice', age: 38]), __.constant(' cypher.null')).properties().key().fold()) 12:03:21.422 [gremlin-server-worker-1] ERROR o.o.g.s.op.cypher.CypherOpProcessor - Error during traversal iteration java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to org.apache.tinkerpop.gremlin.structure.Element at org.apache.tinkerpop.gremlin.process.traversal.step.map.PropertiesStep.flatMap(PropertiesStep.java:51) at org.apache.tinkerpop.gremlin.process.traversal.step.map.FlatMapStep.processNextStart(FlatMapStep.java:49) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.hasNext(ExpandableStepIterator.java:42) at org.apache.tinkerpop.gremlin.process.traversal.step.map.NoOpBarrierStep.processAllStarts(NoOpBarrierStep.java:66) at org.apache.tinkerpop.gremlin.process.traversal.step.map.NoOpBarrierStep.processNextStart(NoOpBarrierStep.java:55) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50) at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:36) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.hasNext(ExpandableStepIterator.java:42) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep.processAllStarts(ReducingBarrierStep.java:83) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ReducingBarrierStep.processNextStart(ReducingBarrierStep.java:113) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:128) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.next(AbstractStep.java:38) at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.next(DefaultTraversal.java:200) at org.apache.tinkerpop.gremlin.process.traversal.util.TraversalUtil.apply(TraversalUtil.java:43) at org.apache.tinkerpop.gremlin.process.traversal.util.TraversalUtil.applyNullable(TraversalUtil.java:75) at org.apache.tinkerpop.gremlin.process.traversal.step.map.ProjectStep.map(ProjectStep.java:55) at org.apache.tinkerpop.gremlin.process.traversal.step.map.ProjectStep.map(ProjectStep.java:40) at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:37) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50) at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:36) at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:192) at org.apache.tinkerpop.gremlin.server.op.AbstractOpProcessor.handleIterator(AbstractOpProcessor.java:89) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.handleIterator(CypherOpProcessor.java:183) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.lambda$evalCypher$0(CypherOpProcessor.java:121) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.inTransaction(CypherOpProcessor.java:129) at org.opencypher.gremlin.server.op.cypher.CypherOpProcessor.evalCypher(CypherOpProcessor.java:121) at org.apache.tinkerpop.gremlin.server.handler.OpExecutorHandler.channelRead0(OpExecutorHandler.java:68) at org.apache.tinkerpop.gremlin.server.handler.OpExecutorHandler.channelRead0(OpExecutorHandler.java:43) at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler$1.channelRead(WebSocketServerProtocolHandler.java:159) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1304) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:921) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:135) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:646) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460) at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131) at java.lang.Thread.run(Thread.java:748)

Then the result should be (ignoring element order for lists): 0.000
org.opencypher.tools.tck.api.Scenario$ScenarioFailedException: Feature "KeysAcceptance": Scenario "Using `keys()` on a parameter map" failed with message: Expected: | k |
| ['address', 'age', 'name'] |, got error ExecutionFailed(TypeError,runtime,InvalidArgumentValue,Some(org.apache.tinkerpop.gremlin.driver.exception.ResponseException: java.util.LinkedHashMap cannot be cast to org.apache.tinkerpop.gremlin.structure.Element))
	at org.opencypher.tools.tck.api.Scenario$$anonfun$executeOnGraph$1.apply(Scenario.scala:95)
	at org.opencypher.tools.tck.api.Scenario$$anonfun$executeOnGraph$1.apply(Scenario.scala:60)
	at scala.collection.LinearSeqOptimized$class.foldLeft(LinearSeqOptimized.scala:124)
	at scala.collection.immutable.List.foldLeft(List.scala:84)
	at org.opencypher.tools.tck.api.Scenario.executeOnGraph(Scenario.scala:60)
	at org.opencypher.tools.tck.api.Scenario$$anon$1.execute(Scenario.scala:54)
	at org.junit.jupiter.engine.descriptor.JupiterTestDescriptor.executeAndMaskThrowable(JupiterTestDescriptor.java:145)
	at org.junit.jupiter.engine.descriptor.DynamicTestTestDescriptor.execute(DynamicTestTestDescriptor.java:46)
	at org.junit.jupiter.engine.descriptor.DynamicTestTestDescriptor.execute(DynamicTestTestDescriptor.java:24)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:83)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$0(HierarchicalTestExecutor.java:85)
	at org.junit.jupiter.engine.descriptor.TestFactoryTestDescriptor.lambda$invokeTestMethod$1(TestFactoryTestDescriptor.java:80)
	at org.junit.jupiter.engine.execution.ThrowableCollector.execute(ThrowableCollector.java:40)
	at org.junit.jupiter.engine.descriptor.TestFactoryTestDescriptor.invokeTestMethod(TestFactoryTestDescriptor.java:68)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:110)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:57)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:83)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.Iterator.forEachRemaining(Iterator.java:116)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$null$2(HierarchicalTestExecutor.java:92)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.Iterator.forEachRemaining(Iterator.java:116)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.lambda$execute$3(HierarchicalTestExecutor.java:92)
	at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:77)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:51)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:43)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:170)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:154)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.processAllTestClasses(JUnitPlatformTestClassProcessor.java:92)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor$CollectAllTestClassesExecutor.access$100(JUnitPlatformTestClassProcessor.java:77)
	at org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestClassProcessor.stop(JUnitPlatformTestClassProcessor.java:73)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:61)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
	at com.sun.proxy.$Proxy1.stop(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.stop(TestWorker.java:123)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:155)
	at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:137)
	at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.tinkerpop.gremlin.driver.exception.ResponseException: java.util.LinkedHashMap cannot be cast to org.apache.tinkerpop.gremlin.structure.Element
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler.channelRead0(Handler.java:246)
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler.channelRead0(Handler.java:197)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinSaslAuthenticationHandler.channelRead0(Handler.java:123)
	at org.apache.tinkerpop.gremlin.driver.Handler$GremlinSaslAuthenticationHandler.channelRead0(Handler.java:67)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:94)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1304)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:921)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:135)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:646)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460)
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
	... 1 more
k
['address', 'name', 'age']