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From "Sam (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DATAFU-38) BagGroup merges rows
Date Thu, 24 Apr 2014 21:21:15 GMT

    [ https://issues.apache.org/jira/browse/DATAFU-38?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13980303#comment-13980303
] 

Sam commented on DATAFU-38:
---------------------------

observed with both 1.0.0 and 1.2.0

> BagGroup merges rows
> --------------------
>
>                 Key: DATAFU-38
>                 URL: https://issues.apache.org/jira/browse/DATAFU-38
>             Project: DataFu
>          Issue Type: Bug
>            Reporter: Sam
>
> load 
> {code}
> 1,a,A,1
> 1,b,A,2
> 1,a,B,3
> 2,c,C,4
> 2,b,B,5
> 2,b,C,6
> {code}
> using {{tmp_datafu = load 'test' using PigStorage(',') as (id:chararray, domain:chararray,
keyword:chararray, weight:int);}}
> and do
> {code}
> tmp_roll = foreach (group tmp_datafu by id) generate
>   group as id,
>   CountEach(tmp_datafu.domain) as domains,
>   BagGroup(tmp_datafu.(keyword,weight),tmp_datafu.keyword) as keywords;
> {code}
> the result is
> {code}
> (1,{(b,1),(a,2)},{(B,{(B,3)}),(A,{(A,1),(A,2)})})
> (2,{(c,1),(b,2)},{(B,{(B,3),(B,5)}),(A,{(A,1),(A,2)}),(C,{(C,4),(C,6)})})
> {code}
> instead of
> {code}
> (1,{(b,1),(a,2)},{(B,{(B,3)}),(A,{(A,1),(A,2)})})
> (2,{(c,1),(b,2)},{(B,{(B,5)}),(C,{(C,4),(C,6)})})
> {code}
> see also
> http://stackoverflow.com/questions/22945236/how-do-i-accumulate-vectors-into-a-map



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