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  1. HBase
  2. HBASE-23326

Implement a ProcedureStore which stores procedures in a HRegion

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.0.0-alpha-1, 2.3.0
    • Component/s: proc-v2
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
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      Use a region based procedure store to replace the old customized WAL based procedure store. The procedure data migration is done automatically during upgrading. After upgrading, the MasterProcWALs directory will be deleted and a new MasterProc directory will be created. And notice that a region will still write WAL so we still have WAL files and they will be moved to the oldWALs directory. The file name is mostly like a normal WAL file, and the only difference is that it is ended with "$masterproc$".
      Show
      Use a region based procedure store to replace the old customized WAL based procedure store. The procedure data migration is done automatically during upgrading. After upgrading, the MasterProcWALs directory will be deleted and a new MasterProc directory will be created. And notice that a region will still write WAL so we still have WAL files and they will be moved to the oldWALs directory. The file name is mostly like a normal WAL file, and the only difference is that it is ended with "$masterproc$".

      Description

      So we can resue the code in HRegion for persisting the procedures, and also the optimized WAL implementation for better performance.

      This requires we merge the hbase-procedure module to hbase-server, which is an anti-pattern as we make the hbase-server module more overloaded. But I think later we can first try to move the WAL stuff out.

        Attachments

          Issue Links

          breaks

          Test - A new unit, integration or system test. HBASE-23786 [Flakey Test] TestMasterNotCarryTable.testMasterMemStoreLAB

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

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-23617 Add a stress test tool for region based procedure store

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-23618 Add a tool to dump procedure info in the WAL file

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-23624 Add a tool to dump the procedure info in HFile

          • Major - Major loss of function.
          • Resolved

          Task - A task that needs to be done. HBASE-23652 Move the unsupported procedure type check before migrating to RegionProcedureStore

          • Blocker - Blocks development and/or testing work, production could not run
          • Resolved

          Task - A task that needs to be done. HBASE-24408 Introduce a general 'local region' to store data on master

          • Blocker - Blocks development and/or testing work, production could not run
          • Resolved
          links to

          Web Link Design Doc

          Web Link GitHub Pull Request #941

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              • Assignee:
                zhangduo Duo Zhang
                Reporter:
                zhangduo Duo Zhang
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                • Created:
                  Updated:
                  Resolved: