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  1. Hive
  2. HIVE-10835

Concurrency issues in JDBC driver

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.13.0, 0.14.0, 0.13.1, 0.15.0, 0.14.1, 1.0.0, 1.2.0, 1.1.0, 1.0.1, 1.1.1, 0.13
    • Fix Version/s: 1.3.0, 2.0.0
    • Component/s: JDBC
    • Labels:
      None

      Description

      Though JDBC specification specifies that "Each Connection object can create multiple Statement objects that may be used concurrently by the program", but that does not work in current Hive JDBC driver. In addition, there also exist race conditions between DatabaseMetaData, Statement and ResultSet as long as they make RPC calls to HS2 using same Thrift transport, which happens within a connection.
      So we need a connection level lock to serialize all these RPC calls in a connection.

        Attachments

        1. HIVE-10835.3.patch
          14 kB
          Chaoyu Tang
        2. HIVE-10835.2.patch
          14 kB
          Chaoyu Tang
        3. HIVE-10835.1.patch
          9 kB
          Chaoyu Tang
        4. HIVE-10835.patch
          22 kB
          Chaoyu Tang

          Activity

            People

            • Assignee:
              ctang Chaoyu Tang
              Reporter:
              ctang Chaoyu Tang
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              Dates

              • Created:
                Updated:
                Resolved: