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Posted to yarn-dev@hadoop.apache.org by "Eric Yang (JIRA)" <ji...@apache.org> on 2018/04/26 17:15:00 UTC

[jira] [Resolved] (YARN-8216) Reduce RegistryDNS port ping logging

     [ https://issues.apache.org/jira/browse/YARN-8216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Yang resolved YARN-8216.
-----------------------------
    Resolution: Fixed

> Reduce RegistryDNS port ping logging
> ------------------------------------
>
>                 Key: YARN-8216
>                 URL: https://issues.apache.org/jira/browse/YARN-8216
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 3.1.0
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>            Priority: Major
>
> System monitoring software usually send a tcp packet to test if port is alive.  This can cause RegistryDNS to throw BufferUnderflowException.
> {code}
> 2018-04-26 17:07:55,846 WARN org.apache.hadoop.util.concurrent.ExecutorHelper: Execution exception when running task in RegistryDNS 3
> 2018-04-26 17:07:55,847 WARN org.apache.hadoop.util.concurrent.ExecutorHelper: Caught exception in thread RegistryDNS 3:
> java.nio.BufferUnderflowException
>         at java.nio.HeapByteBuffer.get(HeapByteBuffer.java:151)
>         at org.apache.hadoop.registry.server.dns.RegistryDNS.nioTCPClient(RegistryDNS.java:771)
>         at org.apache.hadoop.registry.server.dns.RegistryDNS$3.call(RegistryDNS.java:846)
>         at org.apache.hadoop.registry.server.dns.RegistryDNS$3.call(RegistryDNS.java:843)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>         at java.lang.Thread.run(Thread.java:748)
> {code}
> This is perfectly normal, but it would be nice to hide this error message to reduce verbose logging on port ping.



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