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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2020/04/14 00:10:05 UTC
[GitHub] [druid] clintropolis commented on issue #9689: groupBy query: limit
push down to segment scan is poor performance
clintropolis commented on issue #9689: groupBy query: limit push down to segment scan is poor performance
URL: https://github.com/apache/druid/issues/9689#issuecomment-613156901
Thanks for the report @xiangqiao123 , do you have any additional details on the query you issued, such as what the limit was, any extractionFn or lookups, and any details about segment size, column type, if string approximate cardinality, or anything else you think might be useful in helping us determine why the performance degraded?
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