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  1. Hadoop HDFS
  2. HDFS-14968

Add ability to know datanode staleness

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    • Hadoop Flags:
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      Description

      There is no way to know whether a DataNode was marked stale or no longer stale by the NameNode.

      It will be good to have the option to enable logging the DataNode staleness to figure out if the  staleness was the reason behind remote reads. Therefore, analyze performance and decision making of the local vs remote reads.

       

        Attachments

        1. HDFS-14968.001.patch
          9 kB
          Ahmed Hussein
        2. HDFS-14968.002.patch
          9 kB
          Ahmed Hussein
        3. HDFS-14968.003.patch
          10 kB
          Ahmed Hussein

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            • Assignee:
              ahussein Ahmed Hussein
              Reporter:
              ahussein Ahmed Hussein
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              • Created:
                Updated:
                Resolved: