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https://issues.apache.org/jira/browse/HIVE-225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zheng Shao resolved HIVE-225.
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Resolution: Fixed
Should be fixed long time ago.
> incorrect reducer count reported on some group bys
> --------------------------------------------------
>
> Key: HIVE-225
> URL: https://issues.apache.org/jira/browse/HIVE-225
> Project: Hadoop Hive
> Issue Type: Bug
> Reporter: Joydeep Sen Sarma
> Priority: Minor
>
> select count(1) from mm_base where ip like '10.130.1.%';
> uses 1 reducer, but console says:
> hive>
> select count(1) from mm_base where ip like '10.130.1.%';
> Total MapReduce jobs = 1
> Number of reducers = 31
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