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Posted to issues@impala.apache.org by "Gabor Kaszab (Jira)" <ji...@apache.org> on 2020/04/09 13:55:00 UTC

[jira] [Created] (IMPALA-9635) Rewrite count(distinct) to use ds_hll_* functions when in BI mode

Gabor Kaszab created IMPALA-9635:
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             Summary: Rewrite count(distinct) to use ds_hll_* functions when in BI mode
                 Key: IMPALA-9635
                 URL: https://issues.apache.org/jira/browse/IMPALA-9635
             Project: IMPALA
          Issue Type: New Feature
          Components: Frontend
            Reporter: Gabor Kaszab


This effort is dependent on a major FE work that is going on currently. The task here is to verify that:
1) There is a switch to turn on BI mode
2) In BI mode count(distinct) queries are rewritten to ds_hll_* approx functions



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