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  1. WiredTiger
  2. WT-3948

Data handle loop may terminate without applying operations

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.6.4, 3.7.3, WT3.1.0
    • None
    • None

    Description

      In _meta_btree_apply, there is a loop to apply an operation against all file data handles in the metadata. In getting a data handle, if it returns EBUSY, the loop is aborted, rather than simply skipping this entry. It looks like one important use of this function is in preparing a list of checkpoint handles in session->ckpt_handle. It seems if EBUSY can be returned, for example if a file is dropped simultaneous to walking the metadata, then the list will be incomplete, and we will miss flushing a bunch of handles. I don't know if this is theoretical or how serious it may be.

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              donald.anderson@mongodb.com Donald Anderson
              donald.anderson@mongodb.com Donald Anderson
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                Created:
                Updated:
                Resolved: