[ https://issues.apache.org/jira/browse/HADOOP-7304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ramkrishna.s.vasudevan updated HADOOP-7304: ------------------------------------------- Affects Version/s: (was: 0.20-append) (was: 0.21.0) 0.23.0 Fix Version/s: (was: 0.20-append) > BackUpNameNode is using 100% CPU and not accepting any requests. > ----------------------------------------------------------------- > > Key: HADOOP-7304 > URL: https://issues.apache.org/jira/browse/HADOOP-7304 > Project: Hadoop Common > Issue Type: Bug > Components: ipc > Affects Versions: 0.23.0 > Reporter: ramkrishna.s.vasudevan > > In our environment, Backup NameNode is using 100% CPU and not accepting any > calls in 3days long run. > Thread dump > "IPC Server Responder" daemon prio=10 tid=0x00007f86c41c6800 nid=0x3b2a > runnable [0x00007f86ce579000] > java.lang.Thread.State: RUNNABLE > at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method) > at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:215) > at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65) > at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69) > locked <0x00007f86d67e2a20> (a sun.nio.ch.Util$1) > locked <0x00007f86d67e2a08> (a java.util.Collections$UnmodifiableSet) > locked <0x00007f86d67e26a8> (a sun.nio.ch.EPollSelectorImpl) > at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80) > at org.apache.hadoop.ipc.Server$Responder.run(Server.java:501) > Looks like same issue occurred in jetty also. > http://jira.codehaus.org/browse/JETTY-937 > -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira