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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-6199) Filter push down doesn't work with more than one nested subqueries
Date Fri, 16 Mar 2018 16:07:00 GMT

    [ https://issues.apache.org/jira/browse/DRILL-6199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16402106#comment-16402106
] 

ASF GitHub Bot commented on DRILL-6199:
---------------------------------------

Github user arina-ielchiieva commented on the issue:

    https://github.com/apache/drill/pull/1152
  
    @HanumathRao thanks for the review. Applied code review comment.


> Filter push down doesn't work with more than one nested subqueries
> ------------------------------------------------------------------
>
>                 Key: DRILL-6199
>                 URL: https://issues.apache.org/jira/browse/DRILL-6199
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 1.13.0
>            Reporter: Anton Gozhiy
>            Assignee: Arina Ielchiieva
>            Priority: Major
>             Fix For: 1.14.0
>
>         Attachments: DRILL_6118_data_source.csv
>
>
> *Data set:*
> The data is generated used the attached file: *DRILL_6118_data_source.csv*
> Data gen commands:
> {code:sql}
> create table dfs.tmp.`DRILL_6118_parquet_partitioned_by_folders/d1` (c1, c2, c3, c4,
c5) as select cast(columns[0] as int) c1, columns[1] c2, columns[2] c3, columns[3] c4, columns[4]
c5 from dfs.tmp.`DRILL_6118_data_source.csv` where columns[0] in (1, 3);
> create table dfs.tmp.`DRILL_6118_parquet_partitioned_by_folders/d2` (c1, c2, c3, c4,
c5) as select cast(columns[0] as int) c1, columns[1] c2, columns[2] c3, columns[3] c4, columns[4]
c5 from dfs.tmp.`DRILL_6118_data_source.csv` where columns[0]=2;
> create table dfs.tmp.`DRILL_6118_parquet_partitioned_by_folders/d3` (c1, c2, c3, c4,
c5) as select cast(columns[0] as int) c1, columns[1] c2, columns[2] c3, columns[3] c4, columns[4]
c5 from dfs.tmp.`DRILL_6118_data_source.csv` where columns[0]>3;
> {code}
> *Steps:*
> # Execute the following query:
> {code:sql}
> explain plan for select * from (select * from (select * from dfs.tmp.`DRILL_6118_parquet_partitioned_by_folders`))
where c1<3
> {code}
> *Expected result:*
> numFiles=2, numRowGroups=2, only files from the folders d1 and d2 should be scanned.
> *Actual result:*
> Filter push down doesn't work:
> numFiles=3, numRowGroups=3, scanning from all files



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