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https://issues.apache.org/jira/browse/KYLIN-2365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shaofeng SHI closed KYLIN-2365.
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> multi FactDistinctColumnsReducer task write the same output file
> ----------------------------------------------------------------
>
> Key: KYLIN-2365
> URL: https://issues.apache.org/jira/browse/KYLIN-2365
> Project: Kylin
> Issue Type: Bug
> Components: streaming
> Affects Versions: v1.6.0
> Reporter: zheng zhifeng
>
> Multi FactDistinctColumnsReducer task will write the
> distinct columns 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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