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  1. Hadoop HDFS
  2. HDFS-3703 Decrease the datanode failure detection time
  3. HDFS-4071

Add number of stale DataNodes to metrics for Branch-1

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Details

    • Sub-task
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • 1.2.0
    • 1.2.0
    • datanode, namenode
    • None
    • Reviewed
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      This jira adds a new metric with name "StaleDataNodes" under metrics context "dfs" of type Gauge. This tracks the number of DataNodes marked as stale. A DataNode is marked stale when the heartbeat message from the DataNode is not received within the configured time ""dfs.namenode.stale.datanode.interval".


      Please see hdfs-default.xml documentation corresponding to "dfs.namenode.stale.datanode.interval" for more details on how to configure this feature. When this feature is not configured, this metrics would return zero.
      Show
      This jira adds a new metric with name "StaleDataNodes" under metrics context "dfs" of type Gauge. This tracks the number of DataNodes marked as stale. A DataNode is marked stale when the heartbeat message from the DataNode is not received within the configured time ""dfs.namenode.stale.datanode.interval". Please see hdfs-default.xml documentation corresponding to "dfs.namenode.stale.datanode.interval" for more details on how to configure this feature. When this feature is not configured, this metrics would return zero.

    Description

      Backport HDFS-4059 to branch-1.

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            jingzhao Jing Zhao
            jingzhao Jing Zhao
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