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Posted to issues@kylin.apache.org by "kangkaisen (JIRA)" <ji...@apache.org> on 2017/01/08 09:47:58 UTC

[jira] [Closed] (KYLIN-2366) multi FactDistinctColumnsReducer task write the same output file

     [ https://issues.apache.org/jira/browse/KYLIN-2366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

kangkaisen closed KYLIN-2366.
-----------------------------
       Resolution: Duplicate
    Fix Version/s:     (was: Future)

> multi FactDistinctColumnsReducer task write the same output file
> ----------------------------------------------------------------
>
>                 Key: KYLIN-2366
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2366
>             Project: Kylin
>          Issue Type: Bug
>          Components: streaming
>    Affects Versions: v1.6.0
>            Reporter: zheng zhifeng
>
>   Multi FactDistinctColumnsReducer task will write the 
> distinct column to the same output file if the mapreduce
> property mapreduce.reduce.speculative is true. This will
> make the mapreduce job failed or the output file is redundancy.
>   I think it shoud set mapreduce.reduce.speculative to false on
> Extract Fact Table Distinct Columns step.



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