[ https://issues.apache.org/jira/browse/HDFS-12516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arpit Agarwal updated HDFS-12516: --------------------------------- Description: If FsNameSystemLock is held for more than 1 second 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} was: 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} > Suppress the fsnamesystem lock warning on nn startup > ---------------------------------------------------- > > Key: HDFS-12516 > URL: https://issues.apache.org/jira/browse/HDFS-12516 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Ajay Kumar > Assignee: Ajay Kumar > > If FsNameSystemLock is held for more than 1 second 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} -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org