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From "Yongzhi Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9534) incorrect result set for query that projects a windowed aggregate
Date Fri, 12 Feb 2016 00:06:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15143743#comment-15143743
] 

Yongzhi Chen commented on HIVE-9534:
------------------------------------

It seems that your method need a global sorting first, then group the values to have a right
answer. Not As what I thought: each node sort and group its own values, then merge (which
need combine arrays).  Does your method do global sorting first?

> incorrect result set for query that projects a windowed aggregate
> -----------------------------------------------------------------
>
>                 Key: HIVE-9534
>                 URL: https://issues.apache.org/jira/browse/HIVE-9534
>             Project: Hive
>          Issue Type: Bug
>          Components: PTF-Windowing
>            Reporter: N Campbell
>            Assignee: Aihua Xu
>         Attachments: HIVE-9534.1.patch, HIVE-9534.2.patch, HIVE-9534.3.patch, HIVE-9534.4.patch
>
>
> Result set returned by Hive has one row instead of 5
> {code}
> select avg(distinct tsint.csint) over () from tsint 
> create table  if not exists TSINT (RNUM int , CSINT smallint)
>  ROW FORMAT DELIMITED FIELDS TERMINATED BY '|' LINES TERMINATED BY '\n' 
>  STORED AS TEXTFILE;
> 0|\N
> 1|-1
> 2|0
> 3|1
> 4|10
> {code}



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