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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12381) analyze table compute stats for table with special characters will wipe out all the table stats
Date Fri, 04 Dec 2015 08:15:10 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15041250#comment-15041250
] 

Lefty Leverenz commented on HIVE-12381:
---------------------------------------

Doc note:  This removes *hive.stats.key.prefix.max.length* from HiveConf.java, so the wiki
needs to be updated with version information.

* [Configuration Properties -- hive.stats.key.prefix.max.length | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.stats.key.prefix.max.length]

> analyze table compute stats for table with special characters will wipe out all the table
stats
> -----------------------------------------------------------------------------------------------
>
>                 Key: HIVE-12381
>                 URL: https://issues.apache.org/jira/browse/HIVE-12381
>             Project: Hive
>          Issue Type: Bug
>         Environment: 
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>              Labels: TODOC2.0
>         Attachments: HIVE-12381.01.patch, HIVE-12381.02.patch, HIVE-12381.03.patch, HIVE-12381.04.patch,
HIVE-12381.05.patch
>
>
> repo:
> {code}
> drop table `t//`;
> create table `t//` (col string);
> insert into `t//` values(1);
> insert into `t//` values(null);
> analyze table `t//` compute statistics;
> explain select * from `t//`;
> {code}
> The result 
> {code}
> Statistics: Num rows: 1 Data size: 5 Basic stats: COMPLETE Column stats: NONE
> {code}
> is wrong



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