Accumulo
  1. Accumulo
  2. ACCUMULO-1062

large numbers of threads make in-memory updates slow

    Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Critical Critical
    • Resolution: Fixed
    • Affects Version/s: 1.4.2
    • Fix Version/s: 1.4.3, 1.5.0
    • Component/s: tserver
    • Labels:
      None
    • Environment:

      testing on large clusters

      Description

      Using hundreds of ingest programs, each running several batch writers, ingest would eventually become slow. Testing (attached) proved that performance fell off as the number of threads increased.

      1. SlamTest.java
        2 kB
        Eric Newton

        Issue Links

          Activity

          Eric Newton created issue -
          Eric Newton made changes -
          Field Original Value New Value
          Attachment SlamTest.java [ 12569084 ]
          Keith Turner made changes -
          Fix Version/s 1.4.3 [ 12323360 ]
          Keith Turner made changes -
          Status Open [ 1 ] Resolved [ 5 ]
          Assignee Keith Turner [ kturner ] Eric Newton [ ecn ]
          Resolution Fixed [ 1 ]
          Keith Turner made changes -
          Link This issue is duplicated by ACCUMULO-893 [ ACCUMULO-893 ]

            People

            • Assignee:
              Eric Newton
              Reporter:
              Eric Newton
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              Watchers:
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              Dates

              • Created:
                Updated:
                Resolved:

                Development