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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2020/09/02 15:33:31 UTC
[GitHub] [druid] hrishikeshk opened a new issue #10344: Group By V2 query should use the Query/result level cache, if enabled at Broker.
hrishikeshk opened a new issue #10344:
URL: https://github.com/apache/druid/issues/10344
### Description
Simply have Group By V2 use the Query/Result level cacheif it is enabled at Broker. I did not see a reason why it does not (it is documented alright). After all, Group By V1 benefits from it.
### Motivation
I have a number of Group By queries and using Group By V2 because it is indeed faster than V1 (10 sec in V2 versus 28 sec in V1).
If I use segment level caching (at Historicals), the benefit is not as much. Timings reduce to 8 sec in V2.
However, we have many repeated queries and data loads do not interfere. Result level caching has potential to bring down query time to 1 sec.
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[GitHub] [druid] elukey commented on issue #10344: Group By V2 query should use the Query/result level cache, if enabled at Broker.
Posted by GitBox <gi...@apache.org>.
elukey commented on issue #10344:
URL: https://github.com/apache/druid/issues/10344#issuecomment-801754183
I am wondering if the same holds for TopN queries, since I am struggling to find why my Brokers don't cache anything (even if result level cache is enabled, I only see cache miss in the metrics). Is there a list of query types not supported for caching somewhere that I can check?
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