kyungwan nam created YARN-10021:
-----------------------------------
Summary: 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
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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