KryoSerializer Exception

[Shaco.Zhu]

StreamOutputHandler.receive exception when executing multiple Query
Is Output<StreamRecord> output thread safe?

java.lang.ArrayIndexOutOfBoundsException: -1
	at com.esotericsoftware.kryo.util.IntArray.pop(IntArray.java:157)
	at com.esotericsoftware.kryo.Kryo.reference(Kryo.java:822)
	at com.esotericsoftware.kryo.Kryo.copy(Kryo.java:863)
	at com.esotericsoftware.kryo.serializers.MapSerializer.copy(MapSerializer.java:157)
	at com.esotericsoftware.kryo.serializers.MapSerializer.copy(MapSerializer.java:21)
	at com.esotericsoftware.kryo.Kryo.copy(Kryo.java:862)
	at org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.copy(KryoSerializer.java:217)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:577)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:554)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:534)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:689)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:667)
	at org.apache.flink.streaming.api.operators.StreamMap.processElement(StreamMap.java:41)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:579)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:554)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:534)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:689)
	at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:667)
	at org.apache.flink.streaming.siddhi.operator.StreamOutputHandler.receive(StreamOutputHandler.java:70)

[Hao Chen]

@zhuan77241 could you pls. share your use case, as I am unable re-produce the problem.

[Shaco.Zhu]

@haoch Sorry for delayed reply.
My case is to execute multiple sql on the same operate.
So I so I modified the method ExecutionSiddhiStream.cql(String executionPlan) to ExecutionSiddhiStream.cqls(Map<String, String> executionMap).
The exception occurs when I execute multiple sql with grop by (sql1: select .. from xx group by srcAddress,sql2:select ... from xx group by xx and many more).
When I synchronized StreamOutputHandler.receive exception disappears.

Tag v0.1.3

[Hao Chen]

@zhuan77241 thanks, I would have a look and update you back once any findings.

[Pi Jing]

I have encountered the same issue, and I modify code like below to solve it:

tag:0.2.0