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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-5691) multiple count distinct query planning error at physical phase
Date Thu, 10 Aug 2017 15:57:01 GMT

    [ https://issues.apache.org/jira/browse/DRILL-5691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16121824#comment-16121824

ASF GitHub Bot commented on DRILL-5691:

Github user arina-ielchiieva commented on the issue:

    On mine environment all tests pass. I used to have troubles but long time ago. I had to
fix issues with timezones, memory usage `MAVEN_OPTS="-Xmx2048m -XX:MaxPermSize=1024m"`. Also
I am pretty sure that some test have failed because the others did, usually the ones with
Rpc exception. Maybe  `UserRemote SYSTEM ERROR: URISyntaxException` is connected with your
env. You should check that. Also please rebase on the latest master (you can do `push -f`
again), also if `TestTpchDistributedConcurrent.testConcurrentQueries` will be failing again,
try to disable it but make sure it passes separately.

> multiple count distinct query planning error at physical phase 
> ---------------------------------------------------------------
>                 Key: DRILL-5691
>                 URL: https://issues.apache.org/jira/browse/DRILL-5691
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Relational Operators
>    Affects Versions: 1.9.0, 1.10.0
>            Reporter: weijie.tong
> I materialized the count distinct query result in a cache , added a plugin rule to translate
the (Aggregate、Aggregate、Project、Scan) or (Aggregate、Aggregate、Scan) to (Project、Scan)
at the PARTITION_PRUNING phase. Then ,once user issue count distinct queries , it will be
translated to query the cache to get the result.
> eg1: " select count(*),sum(a) ,count(distinct b)  from t where dt=xx " 
> eg2:"select count(*),sum(a) ,count(distinct b) ,count(distinct c) from t where dt=xxx
> eg3:"select count(distinct b), count(distinct c) from t where dt=xxx"
> eg1 will be right and have a query result as I expected , but eg2 will be wrong at the
physical phase.The error info is here: https://gist.github.com/weijietong/1b8ed12db9490bf006e8b3fe0ee52269.

> eg3 will also get the similar error.

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