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  1. WiredTiger
  2. WT-3987

Avoid reading lookaside pages in truncate fast path

    • Type: Icon: Bug Bug
    • Resolution: Fixed
    • Priority: Icon: Critical - P2 Critical - P2
    • 3.6.4, 3.7.4, WT3.1.0
    • Affects Version/s: None
    • Component/s: None
    • Labels:
    • Storage Non-NYC 2018-04-09
    • v3.6

      In WT-3805, we made some changes intended to skip most lookaside data when truncating tables.

      This is a particular issue for MongoDB's oplog, which can have lookaside entries when there is replication lag, but should be truncated without re-reading the oplog pages or the lookaside pages containing those entries.

      It appears from internal testing that the changes in WT-3805 were not effective. That needs to be fixed, and we need a regression test for standalone WiredTiger that this isn't reintroduced.

            michael.cahill@mongodb.com Michael Cahill (Inactive)
            michael.cahill@mongodb.com Michael Cahill (Inactive)
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