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  1. HBase
  2. HBASE-20610 Procedure V2 - Distributed Log Splitting
  3. HBASE-24574

Procedure V2 - Distributed WAL Splitting => LOGGING

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.0.0-alpha-1, 2.3.0
    • Component/s: wal
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The procedure-based distributed WAL splitter uses the old SplitLogManager class. It registers it as a chore even though the chore #run immediately skips out. Meantime we log SLM ran in #0ms frequently. For example...

      ...
      2020-06-17 17:48:30,567 DEBUG [localhost:16000.splitLogManager..Chore.1] hbase.ScheduledChore: SplitLogManager Timeout Monitor execution time: 0 ms.
      2020-06-17 17:48:31,567 DEBUG [localhost:16000.splitLogManager..Chore.1] hbase.ScheduledChore: SplitLogManager Timeout Monitor execution time: 0 ms.
      2020-06-17 17:48:32,570 DEBUG [localhost:16000.splitLogManager..Chore.1] hbase.ScheduledChore: SplitLogManager Timeout Monitor execution time: 0 ms.
      2020-06-17 17:48:33,567 DEBUG [localhost:16000.splitLogManager..Chore.1] hbase.ScheduledChore: SplitLogManager Timeout Monitor execution time: 0 ms.
      2020-06-17 17:48:34,569 DEBUG [localhost:16000.splitLogManager..Chore.1] hbase.ScheduledChore: SplitLogManager Timeout Monitor execution time: 0 ms.
      2020-06-17 17:48:35,569 DEBUG [localhost:16000.splitLogManager..Chore.1] hbase.ScheduledChore: SplitLogManager Timeout Monitor execution time: 0 ms.
      2020-06-17 17:48:36,568 DEBUG [localhost:16000.splitLogManager..Chore.1] hbase.ScheduledChore: SplitLogManager Timeout Monitor execution time: 0 ms.
      ...
      

      The new pv2 WAL splitter introduces new procedures that log their class name only w/o detail on log that is being split or the server that is running the split.

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              • Assignee:
                stack Michael Stack
                Reporter:
                stack Michael Stack
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                • Created:
                  Updated:
                  Resolved: