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  1. Apache Trafodion
  2. TRAFODION-2046

change DTM's memoryUsageChore default settings to enable memory threthold

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    Details

    • Type: Improvement
    • Status: Reopened
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: dtm
    • Labels:
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      Description

      DTM provide MemoryUsageChore to monitor the memory pressure in a RegionServer, when memory is beyond a defined threshold, it will give a warning or prevent new operations based on a flag.
      By default, the threshold is now 100%, and the flag is just warning. So that means DTM coprocessor can use all RS memory and when it find memory pressure , just print warning, instead of control new transaction.
      This will lead to un-predictable behavior for certain fat transaction.
      It is better to change the default setting to enable protection.

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              • Assignee:
                ovis_poly liu ming
                Reporter:
                ovis_poly liu ming
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                Dates

                • Created:
                  Updated: