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Posted to issues@impala.apache.org by "Lars Volker (JIRA)" <ji...@apache.org> on 2019/06/18 18:07:00 UTC

[jira] [Created] (IMPALA-8673) Add query option to force plan hints for insert queries

Lars Volker created IMPALA-8673:
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             Summary: Add query option to force plan hints for insert queries
                 Key: IMPALA-8673
                 URL: https://issues.apache.org/jira/browse/IMPALA-8673
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend, Frontend
    Affects Versions: Impala 3.3.0
            Reporter: Lars Volker


In Impala 3.0 we turned on insert clustering by default (IMPALA-5293). This can lead to performance regressions from 2.x for highly skewed data sets. To help with those cases, we should add a way to force plan hints for insert queries through a query option.



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