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Posted to common-issues@hadoop.apache.org by "Ajay Kumar (JIRA)" <ji...@apache.org> on 2017/09/20 22:16:00 UTC
[jira] [Assigned] (HADOOP-14889) Suppress the fsnamesystem lock
warning on nn startup
[ https://issues.apache.org/jira/browse/HADOOP-14889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ajay Kumar reassigned HADOOP-14889:
-----------------------------------
Assignee: Ajay Kumar
> Suppress the fsnamesystem lock warning on nn startup
> ----------------------------------------------------
>
> Key: HADOOP-14889
> URL: https://issues.apache.org/jira/browse/HADOOP-14889
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Ajay Kumar
> Assignee: Ajay Kumar
>
> If FsNameSystemLock is held for more than 10 seconds then we log stacktrace . We can suppress this fsnamesystem lock warning on NameNode startup.
> {code}
> 17/09/20 21:41:39 INFO namenode.FSNamesystem: FSNamesystem write lock held for 7159 ms via
> java.lang.Thread.getStackTrace(Thread.java:1552)
> org.apache.hadoop.util.StringUtils.getStackTrace(StringUtils.java:945)
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.writeUnlock(FSNamesystem.java:1659)
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1074)
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:703)
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:688)
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:752)
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:992)
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:976)
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1701)
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1769)
> Number of suppressed write-lock reports: 0
> Longest write-lock held interval: 7159
> {code}
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