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  1. Derby
  2. DERBY-5375

Memory "leak" when setting a query timeout

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 10.8.1.2
    • None
    • JDBC
    • Normal
    • Seen in production

    Description

      When setting a query timeout, a new CancelQueryTask is created and scheduled. This CancelQueryTask is still held in the java.util.Timer class's task queue even when the query is already finished until the query timeout is reached.

      For example, if i set a query timeout of 2h using statement.setQueryTimeout(7200) this means that the CancelQueryTask will remain for 2 hours even if the query is finished within 1 second. In scenarios with high load, this can lead to Out of Memory Situations.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. DERBY-4137 OOM issue using XA with timeouts

          • Major - Major loss of function.
          • Closed

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              Unassigned Unassigned
              tbrandl Thomas Brandl
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              Dates

                Created:
                Updated: