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  1. Ignite
  2. IGNITE-9616

SQL: Introduce H2 factory for holder of aggregate result

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 2.6
    • None
    • sql
    • Docs Required

    Description

      H2 collects aggregate results at the simple HashMap (groups set and values set).
      This causes an OOME error on large groups set and large group size with DISTINCT.

      We have to introduce way to use our own implementation of the aggregate result's container.

      H2 issue: #1433

      Attachments

        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. IGNITE-9480 SQL: Introduce H2 LocalResult factory

          • Major - Major loss of function.
          • Open

          Task - A task that needs to be done. IGNITE-7526 SQL: Introduce memory region for reducer merge results with disk offload

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

          Web Link H2 Issue #1433

          Activity

            People

              Unassigned Unassigned
              tledkov-gridgain Taras Ledkov
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              Dates

                Created:
                Updated: