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  1. Hadoop HDFS
  2. HDFS-9917

IBR accumulate more objects when SNN was down for sometime.

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 2.7.2
    • 2.8.0, 2.7.3, 3.0.0-alpha1
    • None
    • None
    • Reviewed

    Description

      SNN was down for sometime because of some reasons..After restarting SNN,it became unreponsive because

      • 29 DN's sending IBR in each 5 million ( most of them are delete IBRs), where as each datanode had only ~2.5 million blocks.
      • GC can't trigger on this objects since all will be under RPC queue.

      To recover this( to clear this objects) ,restarted all the DN's one by one..This issue happened in 2.4.1 where split of blockreport was not available.

      Attachments

        1. HDFS-9917.patch
          2 kB
          Brahma Reddy Battula
        2. HDFS-9917-02.patch
          8 kB
          Brahma Reddy Battula
        3. HDFS-9917-branch-2.7.patch
          8 kB
          Brahma Reddy Battula
        4. HDFS-9917-branch-2.7-002.patch
          7 kB
          Brahma Reddy Battula

        Activity

          People

            brahmareddy Brahma Reddy Battula
            brahmareddy Brahma Reddy Battula
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            Dates

              Created:
              Updated:
              Resolved: