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  1. HBase
  2. HBASE-21097

Flush pressure assertion may fail in testFlushThroughputTuning

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    Details

    • Type: Test
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.0.0, 2.2.0, 2.1.1, 2.0.3
    • Component/s: regionserver
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      From https://builds.apache.org/job/PreCommit-HBASE-Build/14137/artifact/patchprocess/patch-unit-hbase-server.txt :

      [ERROR] testFlushThroughputTuning(org.apache.hadoop.hbase.regionserver.throttle.TestFlushWithThroughputController)  Time elapsed: 17.446 s  <<< FAILURE!
      java.lang.AssertionError: expected:<0.0> but was:<1.2906294173808417E-6>
      	at org.apache.hadoop.hbase.regionserver.throttle.TestFlushWithThroughputController.testFlushThroughputTuning(TestFlushWithThroughputController.java:185)
      

      Here is the related assertion:

          assertEquals(0.0, regionServer.getFlushPressure(), EPSILON);
      

      where EPSILON = 1E-6

      In the above case, due to margin of 2.9E-7, the assertion didn't pass.
      It seems the epsilon can be adjusted to accommodate different workload / hardware combination.

        Attachments

        1. HBASE-21097.patch
          5 kB
          Duo Zhang
        2. 21097.v4.txt
          1 kB
          Ted Yu
        3. 21097.v2.txt
          1 kB
          Ted Yu
        4. 21097.v1.txt
          0.9 kB
          Ted Yu

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            People

            • Assignee:
              yuzhihong@gmail.com Ted Yu
              Reporter:
              yuzhihong@gmail.com Ted Yu
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              Dates

              • Created:
                Updated:
                Resolved: