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  1. MariaDB Server
  2. MDEV-2286

LP:711801 - Sporadic wrong result with mrr_sort_keys

        Details

        • Type: Bug
        • Status: Closed
        • Resolution: Fixed
        • Affects Version/s: None
        • Fix Version/s: None
        • Component/s: None
        • Labels:

          Description

          The following RQG command line reports

          perl runall.pl -queries=1M --duration=300 --threads=2 --seed=time --reporter=QueryTimeout,Deadlock,Backtrace,ErrorLog --validator=Transformer --filter=conf/optimizer/dsmrr-cpk.ff --no-mask --mysqld=sql_mode=ONLY_FULL_GROUP_BY --mysqld=optimizer_search_depth=6 --debug --notnull --engine=InnoDB --mysqld=-join_cache_level=7 --grammar=conf/optimizer/optimizer_no_subquery.yy --queries=100000000 --mask=35033 --basedir=/home/philips/bzr/maria-5.3-mwl128 --seed=1296569756 --threads=1 --duration=900

          reports a single query that returns different results with different execution plans. Issue is not repeatable with an MTR test case. Issue goes away with mrr_sort_keys=off,index_condition_pushdown=off .

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                psergey Sergei Petrunia added a comment -

                Re: Sporadic wrong result with mrr_sort_keys
                Philip,

                I suspect that this could be the same issue as BUG#707925, for which I've already pushed the fix. Could you please re-test with current 5.3?

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                psergey Sergei Petrunia added a comment - Re: Sporadic wrong result with mrr_sort_keys Philip, I suspect that this could be the same issue as BUG#707925, for which I've already pushed the fix. Could you please re-test with current 5.3?
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                philipstoev Philip Stoev added a comment -

                Re: Sporadic wrong result with mrr_sort_keys
                No longer repeatable.

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                philipstoev Philip Stoev added a comment - Re: Sporadic wrong result with mrr_sort_keys No longer repeatable.
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                ratzpo Rasmus Johansson added a comment -

                Launchpad bug id: 711801

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                ratzpo Rasmus Johansson added a comment - Launchpad bug id: 711801

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                  • Assignee:
                    Unassigned
                    Reporter:
                    philipstoev Philip Stoev
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                    Dates

                    • Created:
                      Updated:
                      Resolved: