Biao Liu created FLINK-5093:
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Summary: java.util.ConcurrentModificationException is thrown when
stopping TimerService
Key: FLINK-5093
URL: https://issues.apache.org/jira/browse/FLINK-5093
Project: Flink
Issue Type: Bug
Components: Cluster Management
Environment: FLIP-6 feature branch
Reporter: Biao Liu
Assignee: Biao Liu
Priority: Minor
In stop method of TimeService, removing Timeout instance while iterating the
map will cause a java.util.ConcurrentModificationException.
The stack is:
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
at java.util.HashMap$KeyIterator.next(HashMap.java:956)
at
org.apache.flink.runtime.taskexecutor.slot.TimerService.stop(TimerService.java:63)
at
org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable.stop(TaskSlotTable.java:129)
at
org.apache.flink.runtime.taskexecutor.TaskExecutor.shutDown(TaskExecutor.java:224)
at
org.apache.flink.runtime.taskexecutor.TaskManagerRunner.shutDownInternally(TaskManagerRunner.java:135)
at
org.apache.flink.runtime.taskexecutor.TaskManagerRunner.shutDown(TaskManagerRunner.java:129)
at
org.apache.flink.runtime.minicluster.MiniCluster.shutdownInternally(MiniCluster.java:319)
at
org.apache.flink.runtime.minicluster.MiniCluster.shutdown(MiniCluster.java:274)
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