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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-10713) Throttle FsNameSystem lock warnings
Date Mon, 01 Aug 2016 22:58:20 GMT
Arpit Agarwal created HDFS-10713:

             Summary: Throttle FsNameSystem lock warnings
                 Key: HDFS-10713
                 URL: https://issues.apache.org/jira/browse/HDFS-10713
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: logging, namenode
            Reporter: Arpit Agarwal

The NameNode logs a message if the FSNamesystem write lock is held by a thread for over 1
second. These messages can be throttled to at one most one per x minutes to avoid potentially
filling up NN logs. We can also log the number of suppressed notices since the last log message.

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