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https://issues.apache.org/jira/browse/YARN-8216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Douglas reopened YARN-8216:
---------------------------------
> 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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