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  1. Spark
  2. SPARK-6482

Remove synchronization of Hive Native commands

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Details

    • Improvement
    • Status: Closed
    • Critical
    • Resolution: Not A Problem
    • 1.3.0
    • 2.0.0
    • SQL
    • None

    Description

      As discussed in https://issues.apache.org/jira/browse/SPARK-4908, concurrent hive native commands run into thread-safety issues with org.apache.hadoop.hive.ql.Driver.

      The quick-fix was to synchronize calls to runHive:

      https://github.com/apache/spark/commit/480bd1d2edd1de06af607b0cf3ff3c0b16089add

      However, if the hive native command is long-running, this can block subsequent queries if they have native dependencies.

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        is duplicated by

        Bug - A problem which impairs or prevents the functions of the product. SPARK-6507 Create separate Hive Driver instance for each SQL query in HiveThriftServer2

        • Major - Major loss of function.
        • Resolved

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            Unassigned Unassigned Assign to me
            dyross David Ross
            Cheng Lian Cheng Lian
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