Thomas Tauber-Marshall created IMPALA-7748:
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Summary: Remove the appx_count_distinct query option
Key: IMPALA-7748
URL: https://issues.apache.org/jira/browse/IMPALA-7748
Project: IMPALA
Issue Type: Improvement
Affects Versions: Impala 3.1.0
Reporter: Thomas Tauber-Marshall
With IMPALA-110, we can now support multiple count distinct directly, and the
appx_count_distinct query option is no longer needed. Users who want the perf
improvement from it can always just use the ndv() function directly in their
sql.
We'll mark this option as deprecated in the docs starting from 3.1. Removing it
can be targeted for 4.0
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