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  1. Hadoop HDFS
  2. HDFS-15808

Add metrics for FSNamesystem read/write lock hold long time

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    Description

      To monitor how often read/write locks exceed thresholds, we can add two metrics(ReadLockLongHoldCount/WriteLockLongHoldCount), which are exposed in JMX.

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        1. HDFS-15808-branch-3.3.001.patch
          4 kB
          Tao Li
        2. ExpiredHeartbeat.png
          36 kB
          Konstantin Shvachko
        3. lockLongHoldCount
          173 kB
          Tao Li

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              tomscut Tao Li
              tomscut Tao Li
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