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  1. Hive
  2. HIVE-7372

Select query gives unpredictable incorrect result when parallelism is greater than 1 [Spark Branch]

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: spark-branch
    • Fix Version/s: None
    • Component/s: Spark
    • Labels:
      None

      Description

      In SparkClient.java, if the following property is set, unpredictable, incorrect result may be observed.

          sparkConf.set("spark.default.parallelism", "1");
      

      It's suspected that there are some concurrency issues, as Spark may process multiple datasets in a single JVM when parallelism is greater than 1 in order to use multiple cores.

      NO PRECOMMIT TESTS. This is for spark branch only.

        Attachments

        1. HIVE-7372.patch
          1 kB
          Chengxiang Li
        2. HIVE-7372-Spark.1.patch
          1 kB
          Chengxiang Li

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              • Assignee:
                chengxiang li Chengxiang Li
                Reporter:
                xuefuz Xuefu Zhang
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                Dates

                • Created:
                  Updated:
                  Resolved: