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From "Benedict Jin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-7369) Add more information for `Key group index out of range of key group range` exception
Date Fri, 04 Aug 2017 07:59:00 GMT
Benedict Jin created FLINK-7369:
-----------------------------------

             Summary: Add more information for `Key group index out of range of key group
range` exception
                 Key: FLINK-7369
                 URL: https://issues.apache.org/jira/browse/FLINK-7369
             Project: Flink
          Issue Type: Improvement
          Components: Local Runtime
            Reporter: Benedict Jin
            Assignee: Benedict Jin


When i got the following exception log, it make me confused that the index is more than `32`
or less than `16`. So, we should add more information for it.

```java
java.lang.IllegalArgumentException: Key group index out of range of key group range [16, 32).
	at org.apache.flink.runtime.state.heap.NestedMapsStateTable.setMapForKeyGroup(NestedMapsStateTable.java:104)
	at org.apache.flink.runtime.state.heap.NestedMapsStateTable.putAndGetOld(NestedMapsStateTable.java:218)
	at org.apache.flink.runtime.state.heap.NestedMapsStateTable.put(NestedMapsStateTable.java:207)
	at org.apache.flink.runtime.state.heap.NestedMapsStateTable.put(NestedMapsStateTable.java:145)
	at org.apache.flink.runtime.state.heap.HeapValueState.update(HeapValueState.java:72)
	at org.apache.flink.cep.operator.AbstractKeyedCEPPatternOperator.updateNFA(AbstractKeyedCEPPatternOperator.java:276)
	at org.apache.flink.cep.operator.AbstractKeyedCEPPatternOperator.processElement(AbstractKeyedCEPPatternOperator.java:171)
	at org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:206)
	at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:69)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:263)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:702)
	at java.lang.Thread.run(Thread.java:745)
```



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