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https://issues.apache.org/jira/browse/HIVE-3260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13414958#comment-13414958
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Namit Jain commented on HIVE-3260:
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I agree - there is a alter table command
alter TABLE <TBL_NAME> CLUSTERED BY (<COLS>) INTO <n> BUCKETS;
But, the partition number of buckets are not used anywhere.
Should we just disallow alter table number of buckets in strict mode if there
are some partitions present in the table ?
> support bucketed mapjoin where the small table has different number of
> buckets for different partitons
> ------------------------------------------------------------------------------------------------------
>
> Key: HIVE-3260
> URL: https://issues.apache.org/jira/browse/HIVE-3260
> Project: Hive
> Issue Type: Bug
> Reporter: Namit Jain
>
> Consider the following scenario:
> A (1 partition) join B (2 partitions)
> A has 2 buckets, whereas B has 2 and 4 buckets for different partitions.
> The bucketed mapjoin should still work.
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