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From "Xu Pingyong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-7201) ConcurrentModificationException in JobLeaderIdService
Date Sat, 15 Jul 2017 03:00:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-7201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xu Pingyong updated FLINK-7201:
-------------------------------
    Description: 

{code:java}
 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)
{code}



Because the jobLeaderIdService stops before the rpcService when shutdown the resourceManager´╝î
jobLeaderIdService has a risk of thread-unsafe.

  was:
 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 shutdown the resourceManager´╝î
jobLeaderIdService has a risk of thread-unsafe.


> ConcurrentModificationException in JobLeaderIdService
> -----------------------------------------------------
>
>                 Key: FLINK-7201
>                 URL: https://issues.apache.org/jira/browse/FLINK-7201
>             Project: Flink
>          Issue Type: Bug
>          Components: JobManager
>            Reporter: Xu Pingyong
>            Assignee: Xu Pingyong
>
> {code:java}
>  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)
> {code}
> Because the jobLeaderIdService stops before the rpcService when shutdown the resourceManager´╝î
jobLeaderIdService has a risk of thread-unsafe.



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