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  1. MariaDB Server
  2. MDEV-16520

Out-Of-Memory running big aggregate query on Spider Engine

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      When running 6 concurrent queries (2 queries per 3 tables) the mysqld process gets killed by the OOM killer.

      The queries was:

      select min(id), max(id), avg(id), sum(id), min(id2), max(id2), avg(id2), sum(id2), count(*) FROM t2; -- Finished
      select min(id), max(id), avg(id), sum(id), min(id2), max(id2), avg(id2), sum(id2), count(*) FROM t3;
      select min(id), max(id), avg(id), sum(id), count(*) FROM t1;
      select min(id), max(id), avg(id), bit_xor(id), min(id2), max(id2), avg(id2), bit_xor(id2), count(*) FROM t2; -- Finished
      select min(id), max(id), avg(id), bit_xor(id), min(id2), max(id2), avg(id2), bit_xor(id2), count(*) FROM t3;
      select min(id), max(id), avg(id), bit_xor(id), count(*) FROM t1;


      Where the tables has more than 100M rows.

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              Assignee:
              Kentoku Kentoku Shiba
              Reporter:
              mattiasjonsson Mattias Jonsson
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                Updated:
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