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  1. Percona Server for MongoDB
  2. PSMDB-600

Fix leak of dhandle session_inuse counter in __evict_walk through 'error' early loop exit logic

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    Details

    • Type: Bug
    • Status: Done
    • Priority: Medium
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.0.19-12, 4.2.7-7, 3.6.18-6.0
    • Component/s: None
    • Labels:
      None
    • Needs Review:
      Yes

      Description

      In __evict_walk, the dhandle session_inuse counter is increased and decreased to walk the tree but in case of errors, the code jumps over the code that decreases the counter and basically leaves the dhandle as in-use so it never gets deleted during sweeps.

      This patch adds a fix to decrease the counter even in case of errors when the config dh_evict_walk_leak_fix is enabled.

      https://github.com/apang-ns/mongo/pull/11

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          relates to

          New Feature - A new feature of the product, which has yet to be developed. PSMDB-587 Add options to control the size of several WiredTiger hash arrays concerned with data handles and one for session cursor cache

          • Medium - Minor loss of function, or other problem where easy workaround is present.
          • Done

          New Feature - A new feature of the product, which has yet to be developed. PSMDB-616 Add "txn_checkpoint_prepare_time" and "txn_checkpoint_tree_helper_time" wiredTiger.transaction stats

          • Medium - Minor loss of function, or other problem where easy workaround is present.
          • Done

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              People

              Assignee:
              igor.solodovnikov Igor Solodovnikov
              Reporter:
              akira.kurogane Akira Kurogane
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