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https://issues.apache.org/jira/browse/DRILL-5237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15848268#comment-15848268
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ASF GitHub Bot commented on DRILL-5237:
---------------------------------------
GitHub user Serhii-Harnyk opened a pull request:
https://github.com/apache/drill/pull/735
DRILL-5237: Same query produces different/wrong results
Fixed loss of nested fields from the schema when the first
FlattenRecordBatch is empty
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Serhii-Harnyk/drill DRILL-5237
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/735.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #735
----
commit 800953b7ec924ea31ffc21327950c84528f3c492
Author: Serhii-Harnyk <[email protected]>
Date: 2017-01-27T15:36:10Z
DRILL-5237: Same query produces different/wrong results
----
> Same query produces different/wrong results
> -------------------------------------------
>
> Key: DRILL-5237
> URL: https://issues.apache.org/jira/browse/DRILL-5237
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Serhii Harnyk
> Assignee: Serhii Harnyk
> Attachments: test_data.tar.gz
>
>
> Query
> {code:sql}
> select count(*) as col from (select t1.a.a1 from (select t.*, flatten(t.b) as
> b from dfs.`/tmp/test_data` t where t.c is not null) t1 where t1.a .a1 like
> 'a1');
> {code}
> returns different results for different values for option
> planner.width.max_per_node
> With options
> {code:sql}
> alter session set `planner.slice_target` = 1;
> alter session set `planner.width.max_per_node` = 1;
> {code}
> query returns correct result:
> {noformat}
> +------+
> | col |
> +------+
> | 3 |
> +------+
> {noformat}
> but with options
> {code:sql}
> alter session set `planner.slice_target` = 1;
> alter session set `planner.width.max_per_node` = 3;
> {code}
> the same query returns wrong result
> {noformat}
> +------+
> | col |
> +------+
> | 2 |
> +------+
> {noformat}
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