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  1. Cassandra
  2. CASSANDRA-17205

File leaks will not be be detected and released due to strong self-references in the tidier

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Details

    • Bug
    • Status: Resolved
    • Normal
    • Resolution: Fixed
    • 4.1, 4.1-alpha1
    • Local/SSTable
    • None

    Description

      LogTransaction.SSTableTidier holds a reference to a Tracker which holds references to both a ColumnFamilyStore and a View, both of which hold refs to SSTableReaders. As per the comment at the top of the SSTableTidier:

      // must not retain a reference to the SSTableReader, else leak detection cannot kick in

      We shouldn't hold a reference to the Tracker here; long running unit tests w/-Dcassandra.debugrefcount=true had this pop up.

      ERROR [Strong-Reference-Leak-Detector:1] 2020-10-27T01:10:12,421 NoSpamLogger.java:97 - Strong self-ref loop detected

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            jmckenzie Josh McKenzie
            jmckenzie Josh McKenzie
            Josh McKenzie
            Benedict Elliott Smith, Josh McKenzie
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              Created:
              Updated:
              Resolved: