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  1. HBase
  2. HBASE-25709

Close region may stuck when region is compacting and skipped most cells read

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Details

    • Bug
    • Status: Reopened
    • Major
    • Resolution: Unresolved
    • 1.7.1, 3.0.0-alpha-2, 2.4.10
    • 2.6.0, 2.4.11, 3.0.0-alpha-4, 2.5.4
    • Compaction
    • None
    • Both compacting scanners and user scanners should return promptly, when there are many skipped cells.

    Description

      We found in our cluster about stop region stuck. The region is compacting, and its store files has many TTL expired cells. Close region state marker(HRegion#writestate.writesEnabled) is not checked in compaction, because most cells were skipped. 

       

       

      HBASE-23968 has encountered similar problem, but the solution in it is outer the method

      InternalScanner#next(List<Cell> result, ScannerContext scannerContext), which will not return if there are many skipped cells, for current compaction scanner context. As a result, we need to return in time in the next method, and then check the stop marker.

       

       

       

      Attachments

        1. Master-UI-RIT.png
          221 kB
          Xiaolin Ha
        2. RS-region-state.png
          851 kB
          Xiaolin Ha

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              Xiaolin Ha Xiaolin Ha
              Xiaolin Ha Xiaolin Ha
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              Dates

                Created:
                Updated: