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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