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  1. HBase
  2. HBASE-11165 Scaling so cluster can host 1M regions and beyond (50M regions?)
  3. HBASE-11290

Unlock RegionStates

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Details

    • Sub-task
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 1.2.0, 1.3.0
    • None
    • None
    • None

    Description

      Even though RegionStates is a highly accessed data structure in HMaster. Most of it's methods are synchronized. Which limits concurrency. Even simply making some of the getters non-synchronized by using concurrent data structures has helped with region assignments. We can go as simple as this approach or create locks per region or a bucket lock per region bucket.

      Attachments

        1. HBASE-11290.01.branch-1.patch
          52 kB
          Francis Christopher Liu
        2. HBASE-11290.03.patch
          52 kB
          Francis Christopher Liu
        3. HBASE-11290.02.patch
          52 kB
          Francis Christopher Liu
        4. HBASE-11290_trunk.patch
          52 kB
          Francis Christopher Liu
        5. HBASE-11290-0.98_v2.patch
          49 kB
          Virag Kothari
        6. HBASE-11290-0.98.patch
          36 kB
          Virag Kothari
        7. HBASE-11290.draft.patch
          13 kB
          Mikhail Antonov

        Issue Links

          incorporates

          Bug - A problem which impairs or prevents the functions of the product. HBASE-12667 Deadlock in AssignmentManager

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. HBASE-11793 RegionStates shouldn't be locked while writing to META

          • Major - Major loss of function.
          • Closed

          Activity

            People

              Unassigned Unassigned
              toffer Francis Christopher Liu
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              Dates

                Created:
                Updated: