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  1. Hadoop HDFS
  2. HDFS-9608

Disk IO imbalance in HDFS with heterogeneous storages

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.6.0
    • Fix Version/s: 2.9.0, 3.0.0-alpha1
    • Component/s: None
    • Labels:
      None
    • Target Version/s:

      Description

      Currently RoundRobinVolumeChoosingPolicy use a shared index to choose volumes in HDFS with heterogeneous storages, this leads to non-RR choosing mode for certain type of storage.
      Besides, it uses a shared lock for synchronization which limits the concurrency of volume choosing process. Volume choosing threads that operating on different storage types should be able to run concurrently.

        Attachments

        1. HDFS-9608.01.patch
          6 kB
          Wei Zhou
        2. HDFS-9608.02.patch
          7 kB
          Wei Zhou
        3. HDFS-9608.03.patch
          5 kB
          Wei Zhou
        4. HDFS-9608.04.patch
          7 kB
          Wei Zhou
        5. HDFS-9608.05.patch
          7 kB
          Wei Zhou
        6. HDFS-9608.06.patch
          10 kB
          Wei Zhou
        7. HDFS-9608.07.patch
          10 kB
          Wei Zhou

          Activity

            People

            • Assignee:
              zhouwei Wei Zhou
              Reporter:
              zhouwei Wei Zhou
            • Votes:
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              Dates

              • Created:
                Updated:
                Resolved: