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https://issues.apache.org/jira/browse/YARN-10021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
kyungwan nam reassigned YARN-10021:
-----------------------------------
Attachment: YARN-10021.001.patch
Assignee: kyungwan nam
> NPE in YARN Registry DNS when wrong DNS message is incoming
> -----------------------------------------------------------
>
> Key: YARN-10021
> URL: https://issues.apache.org/jira/browse/YARN-10021
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: kyungwan nam
> Assignee: kyungwan nam
> Priority: Major
> Attachments: YARN-10021.001.patch
>
>
> I’ve met NPE in YARN Registry DNS as below.
> It looks like this happens if the incoming DNS request is the wrong format.
> {code:java}
> 2019-11-29 10:51:12,178 ERROR dns.RegistryDNS (RegistryDNS.java:call(932)) -
> Error initializing DNS UDP listener
> java.lang.NullPointerException
> at java.nio.ByteBuffer.put(ByteBuffer.java:859)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS.serveNIOUDP(RegistryDNS.java:983)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS.access$100(RegistryDNS.java:121)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS$5.call(RegistryDNS.java:930)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS$5.call(RegistryDNS.java:926)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> 2019-11-29 10:51:12,180 WARN concurrent.ExecutorHelper
> (ExecutorHelper.java:logThrowableFromAfterExecute(50)) - Execution exception
> when running task in RegistryDNS 1
> 2019-11-29 10:51:12,180 WARN concurrent.ExecutorHelper
> (ExecutorHelper.java:logThrowableFromAfterExecute(63)) - Caught exception in
> thread RegistryDNS 1:
> java.lang.NullPointerException
> at java.nio.ByteBuffer.put(ByteBuffer.java:859)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS.serveNIOUDP(RegistryDNS.java:983)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS.access$100(RegistryDNS.java:121)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS$5.call(RegistryDNS.java:930)
> at
> org.apache.hadoop.registry.server.dns.RegistryDNS$5.call(RegistryDNS.java:926)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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