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From "Aman Sinha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-2408) CTAS should not create empty folders when underlying query returns no results
Date Tue, 21 Apr 2015 19:21:02 GMT

    [ https://issues.apache.org/jira/browse/DRILL-2408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14505562#comment-14505562
] 

Aman Sinha commented on DRILL-2408:
-----------------------------------

Could you post the patch on review board ? thanks. 

> CTAS should not create empty folders when underlying query returns no results
> -----------------------------------------------------------------------------
>
>                 Key: DRILL-2408
>                 URL: https://issues.apache.org/jira/browse/DRILL-2408
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Writer
>    Affects Versions: 0.8.0
>            Reporter: Aman Sinha
>            Assignee: Aman Sinha
>            Priority: Critical
>             Fix For: 1.0.0
>
>         Attachments: DRILL-2408.1.patch.txt, DRILL-2408.2.patch.txt, DRILL-2408.3.patch.txt,
DRILL-2408.4.patch.txt
>
>
> {noformat}
> 0: jdbc:drill:schema=dfs> select c_integer, c_bigint, c_date, c_time, c_varchar from
j4 where c_bigint is null;
> +------------+------------+------------+------------+------------+
> | c_integer  |  c_bigint  |   c_date   |   c_time   | c_varchar  |
> +------------+------------+------------+------------+------------+
> +------------+------------+------------+------------+------------+
> No rows selected (0.126 seconds)
> 0: jdbc:drill:schema=dfs> create table ctas_t6(c1,c2,c3,c4,c5) as select c_integer,
c_bigint, c_date, c_time, c_varchar from j4 where c_bigint is null;
> +------------+---------------------------+
> |  Fragment  | Number of records written |
> +------------+---------------------------+
> | 0_0        | 0                         |
> +------------+---------------------------+
> 1 row selected (0.214 seconds)
> 0: jdbc:drill:schema=dfs> select * from ctas_t6;
> Query failed: IndexOutOfBoundsException: Index: 0, Size: 0
> Error: exception while executing query: Failure while executing query. (state=,code=0)
> {noformat}
> parquet file was not created, but directory was:
> {noformat}
> [Mon Apr 06 09:03:41 root@/mapr/vmarkman.cluster.com/drill/testdata/joins/ctas_t6 ] #
pwd
> /mapr/vmarkman.cluster.com/drill/testdata/joins/ctas_t6
> [Mon Apr 06 09:03:45 root@/mapr/vmarkman.cluster.com/drill/testdata/joins/ctas_t6 ] #
ls -l
> total 0
> {noformat}



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