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  1. Apache Trafodion
  2. TRAFODION-2653

Sort operator loops at times

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.2.0
    • Fix Version/s: 2.2.0
    • Component/s: sql-exe
    • Labels:
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      Description

      This issue was observed in Esgyn internal testing. When the system is heavily loaded, the scratch IOs can return EAGAIN that translates to OPERATION_NOT_COMPLETE in Sort scratch IO handling. This condition is not being handled correctly.

      Scratch IO doesn't use asynchronous IOs though the scratch file is opened in non-blocking mode. EAGAIN is returned from these IO operations very rarely. It should be fine to open the scratch file in blocking mode to avoid this problem

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            • Assignee:
              selvag Selvaganesan Govindarajan
              Reporter:
              selvag Selvaganesan Govindarajan
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              • Created:
                Updated:
                Resolved: