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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-1582) merge mapfiles task behaves incorrectly for 'inserting overwrite directory...'
Date Mon, 23 Aug 2010 05:15:16 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12901264#action_12901264
] 

Ning Zhang commented on HIVE-1582:
----------------------------------

@namit, merging happens even before HIVE-1307. There does not seems to exist a unit test for
this feature -- no merge for inserting to directory). BTW, what's the rationale behind this?


> merge mapfiles task behaves incorrectly for 'inserting overwrite directory...'
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-1582
>                 URL: https://issues.apache.org/jira/browse/HIVE-1582
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: He Yongqiang
>
> hive> 
>     > 
>     > 
>     >      SET hive.input.format=org.apache.hadoop.hive.ql.io.HiveInputFormat;
> hive>            SET hive.exec.compress.output=false;
> hive>                INSERT OVERWRITE DIRECTORY 'xxxxx'
>     >                  SELECT yyyy from  a;
> Total MapReduce jobs = 2
> Launching Job 1 out of 2
> Number of reduce tasks is set to 0 since there's no reduce operator
> ......
> Ended Job = job_201008191557_54169
> Ended Job = 450290112, job is filtered out (removed at runtime).
> Launching Job 2 out of 2
> .....
> the second job should not get started.

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