Xu Pingyong created FLINK-7201:
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Summary: ConcurrentModificationException in JobLeaderIdService
Key: FLINK-7201
URL: https://issues.apache.org/jira/browse/FLINK-7201
Project: Flink
Issue Type: Bug
Reporter: Xu Pingyong
Assignee: Xu Pingyong
java.util.ConcurrentModificationException: null
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
at java.util.HashMap$ValueIterator.next(HashMap.java:950)
at
org.apache.flink.runtime.resourcemanager.JobLeaderIdService.clear(JobLeaderIdService.java:114)
at
org.apache.flink.runtime.resourcemanager.JobLeaderIdService.stop(JobLeaderIdService.java:92)
at
org.apache.flink.runtime.resourcemanager.ResourceManager.shutDown(ResourceManager.java:200)
at
org.apache.flink.runtime.resourcemanager.ResourceManagerRunner.shutDownInternally(ResourceManagerRunner.java:102)
at
org.apache.flink.runtime.resourcemanager.ResourceManagerRunner.shutDown(ResourceManagerRunner.java:97)
at
org.apache.flink.runtime.minicluster.MiniCluster.shutdownInternally(MiniCluster.java:329)
at
org.apache.flink.runtime.minicluster.MiniCluster.shutdown(MiniCluster.java:297)
at
org.apache.flink.runtime.minicluster.MiniClusterITCase.runJobWithMultipleJobManagers(MiniClusterITCase.java:85)
Because the jobLeaderIdService stops before the rpcService when shutdowning the
resourceManager， jobLeaderIdService has a risk of thread-unsafe.
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