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Ajay Kumar commented on HDFS-12516: ----------------------------------- [~anu], you are right. I think this is what [~arpitagarwal] suggested initially. Made the change in patch v3. > 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 > Attachments: HDFS-12516.01.patch, HDFS-12516.02.patch, > HDFS-12516.03.patch > > > Whenever FsNameSystemLock is held for more than configured value of > {{dfs.namenode.write-lock-reporting-threshold-ms}}, we log stacktrace and an > entry in metrics. Loading FSImage from disk will usually cross this > threshold. 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