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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-964) handle skewed keys for a join in a separate job
Date Sat, 16 Jan 2010 02:41:54 GMT

    [ https://issues.apache.org/jira/browse/HIVE-964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12801077#action_12801077
] 

Namit Jain commented on HIVE-964:
---------------------------------

    [junit] diff -a -I file: -I /tmp/ -I invalidscheme: -I lastUpdateTime -I lastAccessTime
-I owner -I transient_lastDdlTime /data/us\
ers/njain/hive_commit1/hive_commit1/build/ql/test/logs/clientnegative/load_wrong_fileformat_rc_seq.q.out
/data/users/njain/hive_commit\
1/hive_commit1/ql/src/test/results/clientnegative/load_wrong_fileformat_rc_seq.q.out
    [junit] 11d10
    [junit] < POSTHOOK: Output: default@t1


Got a diff in NegativeCliDriver

Also, I got a timeout while running TestCliDriver - can you increase the timeout interval
time ?

> handle skewed keys for a join in a separate job
> -----------------------------------------------
>
>                 Key: HIVE-964
>                 URL: https://issues.apache.org/jira/browse/HIVE-964
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: He Yongqiang
>         Attachments: hive-964-2009-12-17.txt, hive-964-2009-12-28-2.patch, hive-964-2009-12-29-4.patch,
hive-964-2010-01-08.patch, hive-964-2010-01-13-2.patch, hive-964-2010-01-14-3.patch, hive-964-2010-01-15-4.patch
>
>
> The skewed keys can be written to a temporary table or file, and a followup conditional
task can be used to perform the join on those keys.
> As a first step, JDBM can be used for those keys

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