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  1. Hadoop HDFS
  2. HDFS-4669

TestBlockPoolManager fails using IBM java

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.3-alpha
    • Fix Version/s: 2.1.0-beta
    • Component/s: test
    • Labels:
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      TestBlockPoolManager unit test fails with the following error message using IBM java:
      testFederationRefresh(org.apache.hadoop.hdfs.server.datanode.TestBlockPoolManager) Time elapsed: 27 sec <<< FAILURE!
      org.junit.ComparisonFailure: expected:<stop #[1
      refresh #2]
      > but was:<stop #[2
      refresh #1]
      >

      The root cause is:
      (1)if we want to remove the first NS, keep the second NS, it should be conf.set(DFSConfigKeys.DFS_NAMESERVICES, ns2), not conf.set(DFSConfigKeys.DFS_NAMESERVICES, ns1).

      (2)Since HashMap & HashSet store the data in the random order way, so in ibm java & Oracle java, HashMap get the random order <key, value> that causing the random ns1&ns2 value. So in the code, it should use LinkedHashMap & LinkedHashSet to keep the original order.

        Attachments

        1. HADOOP-4669.patch
          2 kB
          Tian Hong Wang

          Activity

            People

            • Assignee:
              tianhonglouis Tian Hong Wang
              Reporter:
              tianhonglouis Tian Hong Wang
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              Dates

              • Created:
                Updated:
                Resolved: