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  1. Accumulo
  2. ACCUMULO-4114

examine performance decrease with many tablets

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    Details

    • Type: Task
    • Status: Resolved
    • Priority: Major
    • Resolution: Not A Problem
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: client, tserver
    • Labels:
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      Description

      While writing a performance test for ACCUMULO-4112, I noticed the performance drop for large numbers of tablets hosted on a single server.
      Some decrease in performance is expected since the various queues and buffers are being divided among a greater number of tablets, but a 5x decrease is unexpected. Given other fixes (ACCUMULO-3423, for example) I would not expect performance to drop off so dramatically.

      Investigate the performance of conditional updates going to many tablets, vs one tablet.

        Attachments

        1. MinCFlushPerfTest.java
          5 kB
          Eric C. Newton
        2. PerfSmallIMM.png
          100 kB
          Eric C. Newton
        3. MetadataCompactionsPerTest.png
          14 kB
          Eric C. Newton
        4. PerfWithMoreTablets.png
          28 kB
          Eric C. Newton

          Activity

            People

            • Assignee:
              ecn Eric C. Newton
              Reporter:
              ecn Eric C. Newton
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              Dates

              • Created:
                Updated:
                Resolved: