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https://issues.apache.org/jira/browse/FLINK-4650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15509268#comment-15509268
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Stephan Ewen commented on FLINK-4650:
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Can you describe what message you get? Do the Akka heartbeats time out?
Can you share the log of the TaskManagers and the JobManager?
> Frequent task manager disconnects from JobManager
> -------------------------------------------------
>
> Key: FLINK-4650
> URL: https://issues.apache.org/jira/browse/FLINK-4650
> Project: Flink
> Issue Type: Bug
> Reporter: Nagarjun Guraja
>
> Not sure of the exact reason but we observe more frequent task manager
> disconnects while using 1.2 snapshot build as compared to 1.1.2 release build
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