Github user dkuppitz commented on the issue:
https://github.com/apache/tinkerpop/pull/492
There's still an interference between `GremlinDriverIntegrateTest` and a
locally running DSE Graph instance.
```
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.apache.tinkerpop.gremlin.server.GremlinDriverIntegrateTest
[WARN]
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0 -
Response [PooledUnsafeDirectByteBuf(ridx: 136, widx: 136, cap: 136)] could not
be deserialized by
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.
[ERROR] org.apache.tinkerpop.gremlin.driver.Handler$GremlinResponseHandler
- Could not process the response
io.netty.handler.codec.DecoderException:
org.apache.tinkerpop.gremlin.driver.ser.SerializationException:
java.lang.NullPointerException
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345)
at
org.apache.tinkerpop.gremlin.driver.handler.WebSocketClientHandler.channelRead0(WebSocketClientHandler.java:91)
at
io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345)
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:345)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:352)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:572)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:513)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:427)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:399)
at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.tinkerpop.gremlin.driver.ser.SerializationException:
java.lang.NullPointerException
at
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.deserializeResponse(AbstractGraphSONMessageSerializerV2d0.java:169)
at
org.apache.tinkerpop.gremlin.driver.handler.WebSocketGremlinResponseDecoder.decode(WebSocketGremlinResponseDecoder.java:50)
at
org.apache.tinkerpop.gremlin.driver.handler.WebSocketGremlinResponseDecoder.decode(WebSocketGremlinResponseDecoder.java:37)
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
... 24 more
Caused by: java.lang.NullPointerException
at
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV2d0.deserializeResponse(AbstractGraphSONMessageSerializerV2d0.java:160)
... 27 more
```
Not sure if it helps, but this is what's logged by DSE:
```
WARN 23:59:14,792 WsGremlinBinaryRequestDecoder.java:89 - Gremlin Server
is not configured with a serializer for the requested mime type
[application/vnd.gremlin-v2.0+json] - using
org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV1d0 by default
WARN 23:59:14,793 AbstractGraphSONMessageSerializerV1d0.java:148 -
Request [PooledUnsafeDirectByteBuf(ridx: 218, widx: 218, cap: 252)] could not
be deserialized by
org.apache.tinkerpop.gremlin.driver.ser.AbstractGraphSONMessageSerializerV1d0.
WARN 23:59:14,793 GREMLIN DseOpSelectorHandler.java:104 - Invalid
OpProcessor requested [null]
org.apache.tinkerpop.gremlin.server.op.OpProcessorException: Invalid
OpProcessor requested [null]
at
com.datastax.bdp.graph.plugin.DseOpSelectorHandler.decode(DseOpSelectorHandler.java:98)
[dse-graph-5.1.0-SNAPSHOT.jar:5.1.0-SNAPSHOT]
at
com.datastax.bdp.graph.plugin.DseOpSelectorHandler.decode(DseOpSelectorHandler.java:42)
[dse-graph-5.1.0-SNAPSHOT.jar:5.1.0-SNAPSHOT]
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
com.datastax.bdp.graph.plugin.GremlinServerGraphHandler.handleRequestMessage(GremlinServerGraphHandler.java:133)
[dse-graph-5.1.0-SNAPSHOT.jar:5.1.0-SNAPSHOT]
at
com.datastax.bdp.graph.plugin.AbstractRequestMessageHandler.channelRead(AbstractRequestMessageHandler.java:62)
[dse-graph-5.1.0-SNAPSHOT.jar:5.1.0-SNAPSHOT]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
com.datastax.bdp.cassandra.audit.GremlinServerAuditLogRequestHandler.handleRequestMessage(GremlinServerAuditLogRequestHandler.java:32)
[dse-graph-5.1.0-SNAPSHOT.jar:5.1.0-SNAPSHOT]
at
com.datastax.bdp.graph.plugin.AbstractRequestMessageHandler.channelRead(AbstractRequestMessageHandler.java:62)
[dse-graph-5.1.0-SNAPSHOT.jar:5.1.0-SNAPSHOT]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler$1.channelRead(WebSocketServerProtocolHandler.java:147)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:277)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:264)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:292)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:278)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:962)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:485)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:399)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:371)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
[netty-all-4.0.36.Final.jar:4.0.36.Final]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]
```
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