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  1. Ignite
  2. IGNITE-11289

BPlusTree.AbstractForwardCursor can use obsolete page

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 2.7
    • None
    • cache
    • None
    • Docs Required

    Description

      There is a possibility that AbstractForwardCursor.nextPageId refers to a page which was already excluded from the tree. The problem reproduces with a scan query execution with put/remove load in background.

      Linked PR contains a reproducer and some tricks allowing to reproduce the problem more often (it is still possible to reproduce it without tricks but likelihood is significantly lower). The problem becomes evident when a problematic page is taken from REUSE_BUCKET. But there could be other hidden problems which do not cause any runtime errors but lead to data inconsistency.

      Attachments

        Issue Links

          Blocked

          Bug - A problem which impairs or prevents the functions of the product. IGNITE-10767 MVCC: Unknown page type error during scan query

          • Major - Major loss of function.
          • Resolved
          links to

          Web Link PR with reproducer

          Activity

            People

              Unassigned Unassigned
              Pavlukhin Ivan Pavlukhin
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              Dates

                Created:
                Updated: