[ 
https://issues.apache.org/jira/browse/TINKERPOP-1509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16384109#comment-16384109
 ] 

stephen mallette commented on TINKERPOP-1509:
---------------------------------------------

The GraphSON 2.0 test for tree now works. GraphSON 3.0 however is failing and 
the tree test in {{GraphSONMessageSerializerV3d0Test}} remains disabled - error 
is:

{code}
[WARN] 
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0 - 
Response 
[UnpooledByteBufAllocator$InstrumentedUnpooledUnsafeNoCleanerDirectByteBuf(ridx:
 2240, widx: 2240, cap: 2240)] could not be deserialized by 
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Can not 
deserialize instance of java.lang.Object out of END_ARRAY token
 at [Source: [B@6a28ffa4; line: 1, column: 1119]
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["value"])
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["value"])
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["result"]->java.util.LinkedHashMap["data"])
        at 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException.from(JsonMappingException.java:270)
        at 
org.apache.tinkerpop.shaded.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:1313)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:194)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromAny(GraphSONTypeDeserializer.java:101)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.UntypedObjectDeserializer.deserializeWithType(UntypedObjectDeserializer.java:290)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer._readAndBindStringKeyMap(MapDeserializer.java:519)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:362)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:27)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:219)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromAny(GraphSONTypeDeserializer.java:101)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.UntypedObjectDeserializer.deserializeWithType(UntypedObjectDeserializer.java:290)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer._readAndBindStringKeyMap(MapDeserializer.java:519)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:362)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:27)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:212)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromObject(GraphSONTypeDeserializer.java:86)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserializeWithType(MapDeserializer.java:397)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:63)
        at 
org.apache.tinkerpop.shaded.jackson.databind.DeserializationContext.readValue(DeserializationContext.java:770)
        at 
org.apache.tinkerpop.shaded.jackson.databind.DeserializationContext.readValue(DeserializationContext.java:758)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.AbstractObjectDeserializer.deserialize(AbstractObjectDeserializer.java:48)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:212)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromAny(GraphSONTypeDeserializer.java:101)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.StdDeserializer.deserializeWithType(StdDeserializer.java:120)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:63)
        at 
org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3814)
        at 
org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2945)
        at 
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.deserializeResponse(AbstractGraphSONMessageSerializerV2d0.java:134)
        at 
org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0Test.convert(GraphSONMessageSerializerV3d0Test.java:348)
        at 
org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0Test.shouldSerializeToTreeJson(GraphSONMessageSerializerV3d0Test.java:267)
        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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
        at 
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
        at 
com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
        at 
com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
        at 
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

org.apache.tinkerpop.gremlin.driver.ser.SerializationException: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Can not 
deserialize instance of java.lang.Object out of END_ARRAY token
 at [Source: [B@6a28ffa4; line: 1, column: 1119]
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["value"])
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["value"])
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["result"]->java.util.LinkedHashMap["data"])

        at 
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.deserializeResponse(AbstractGraphSONMessageSerializerV2d0.java:137)
        at 
org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0Test.convert(GraphSONMessageSerializerV3d0Test.java:348)
        at 
org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0Test.shouldSerializeToTreeJson(GraphSONMessageSerializerV3d0Test.java:267)
        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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
        at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
        at 
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
        at 
com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
        at 
com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
        at 
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: 
Could not deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Could not 
deserialize the JSON value as required. Nested exception: 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException: Can not 
deserialize instance of java.lang.Object out of END_ARRAY token
 at [Source: [B@6a28ffa4; line: 1, column: 1119]
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["value"])
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["value"])
 at [Source: [B@6a28ffa4; line: 1, column: 1119] (through reference chain: 
java.util.LinkedHashMap["result"]->java.util.LinkedHashMap["data"])
        at 
org.apache.tinkerpop.shaded.jackson.databind.JsonMappingException.from(JsonMappingException.java:270)
        at 
org.apache.tinkerpop.shaded.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:1313)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:194)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromAny(GraphSONTypeDeserializer.java:101)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.UntypedObjectDeserializer.deserializeWithType(UntypedObjectDeserializer.java:290)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer._readAndBindStringKeyMap(MapDeserializer.java:519)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:362)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:27)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:219)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromAny(GraphSONTypeDeserializer.java:101)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.UntypedObjectDeserializer.deserializeWithType(UntypedObjectDeserializer.java:290)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer._readAndBindStringKeyMap(MapDeserializer.java:519)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:362)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:27)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:212)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromObject(GraphSONTypeDeserializer.java:86)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.MapDeserializer.deserializeWithType(MapDeserializer.java:397)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:63)
        at 
org.apache.tinkerpop.shaded.jackson.databind.DeserializationContext.readValue(DeserializationContext.java:770)
        at 
org.apache.tinkerpop.shaded.jackson.databind.DeserializationContext.readValue(DeserializationContext.java:758)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.AbstractObjectDeserializer.deserialize(AbstractObjectDeserializer.java:48)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserialize(GraphSONTypeDeserializer.java:212)
        at 
org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTypeDeserializer.deserializeTypedFromAny(GraphSONTypeDeserializer.java:101)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.std.StdDeserializer.deserializeWithType(StdDeserializer.java:120)
        at 
org.apache.tinkerpop.shaded.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:63)
        at 
org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3814)
        at 
org.apache.tinkerpop.shaded.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2945)
        at 
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.deserializeResponse(AbstractGraphSONMessageSerializerV2d0.java:134)
        ... 24 more
{code}

> Failing test case for tree serialization
> ----------------------------------------
>
>                 Key: TINKERPOP-1509
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1509
>             Project: TinkerPop
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 3.2.2
>            Reporter: stephen mallette
>            Priority: Major
>
> The failure only seems to happen in some environments. I've ignored the test 
> for now:
> {code}
> org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV2d0Test
> shouldSerializeToTreeJson
> org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraphGraphSONSerializerV2d0Test.deserializersTestsTree
> {code}



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