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} -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org