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  1. WiredTiger
  2. WT-2126

page-split failures

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • WT2.7.0
    • None
    • None

    Description

      The page-split cleanup needs review and cleanup, there are a few different obvious problems:

      • wt_split_rewrite isn't discarding the newly created page on error
      • split_multi_inmem discards the replacement disk image which means on failure, the reconciliation state is corrupted
      • wt_split_insert doesn't get the accounting correct if the page-split fails.

      This is exacerbated by the new code that relies on split_parent locking the page (using the reconciliation lock), and returning EBUSY if the lock isn't available and the file is being checkpointed, to avoid deadlock. This makes it likely that a busy system can trigger one of these failures.

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              keith.bostic@mongodb.com Keith Bostic
              keith.bostic@mongodb.com Keith Bostic
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                Created:
                Updated:
                Resolved: