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From "alex.lv (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5537) hive return different results with and without index when hive.hadoop.supports.splittable.combineinputformat =true
Date Thu, 26 Sep 2013 04:08:02 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13778437#comment-13778437
] 

alex.lv commented on MAPREDUCE-5537:
------------------------------------

ddd
                
> hive return different results with and without index when hive.hadoop.supports.splittable.combineinputformat
=true
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5537
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5537
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: alex.lv
>            Assignee: alex.lv
>
> the  environment:
> hive-0.8.1
> hadoop-0.20.2-cdh3u6
> the Presentation:
> i use the hive-0.8.1 to exec the query:
> select count(*) from table t1;
> the table t1 is lzo formatted ,and the follows is :
> # Storage Information                                                               
                                
> SerDe Library:                  org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe  
                                
> InputFormat:                    com.hadoop.mapred.DeprecatedLzoTextInputFormat      
                                
> OutputFormat:                   org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat

> and the hive.hadoop.supports.splittable.combineinputformat =true
> when i index the table t1,the result is  265329 .
> when i remove the index of the t1,the result is  265325.

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