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  1. Hadoop HDFS
  2. HDFS-12140

Remove BPOfferService lock contention to get block pool id

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Details

    • Bug
    • Status: Resolved
    • Critical
    • Resolution: Fixed
    • 2.8.0
    • 2.9.0, 3.0.0-beta1, 2.8.2
    • datanode
    • None
    • Reviewed

    Description

      The block pool id is protected by a lock in BPOfferService. This creates excessive contention especially for xceivers threads attempting to queue IBRs and heartbeat processing. When the latter is delayed due to excessive FSDataset lock contention, it causes pipelines to collapse.

      Accessing the block pool id should be lockless after registration.

      Attachments

        1. HDFS-12140.branch-2.8.patch
          5 kB
          Daryn Sharp
        2. HDFS-12140.trunk.patch
          5 kB
          Daryn Sharp

        Activity

          People

            daryn Daryn Sharp
            daryn Daryn Sharp
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            Dates

              Created:
              Updated:
              Resolved: