[jira] [Created] (IGNITE-13904) Don't use rows buffers by redce index for simple one-way reducer

[Anton Vinogradov (Jira)]

Taras Ledkov created IGNITE-13904:
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             Summary: Don't use rows buffers by redce index for simple one-way reducer
                 Key: IGNITE-13904
                 URL: https://issues.apache.org/jira/browse/IGNITE-13904
             Project: Ignite
          Issue Type: Bug
          Components: sql
    Affects Versions: 2.9
            Reporter: Taras Ledkov
            Assignee: Taras Ledkov
             Fix For: 2.10


Now the reducer's index buffer {{AbstractReducer#fetched}} is used even for simple plain query. It is the cause of increased memory usage for plain query.

Proposed fix:
- don't use index buffer for simple reducer (for plain query).




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