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https://issues.apache.org/jira/browse/HIVE-17675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Deepak Jaiswal resolved HIVE-17675.
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Resolution: Won't Fix
This only applies to ACID tables which sort the data using Row ID instead of
sort column(s). For such tables SMB wont happen. For other tables a new insert
goes into different files and SMB uses KeyValueMerger to merge data from those
files.
> verify SMB join with multiple inserts
> -------------------------------------
>
> Key: HIVE-17675
> URL: https://issues.apache.org/jira/browse/HIVE-17675
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Deepak Jaiswal
> Priority: Major
>
> Hive has a family of joins that interact with sorted and bucketed tables.
> Afaik one (all?) of them actually rely on the table being sorted, rather than
> sorting it.
> If one runs insert on such a table without merge more than once, there'd be
> 2+ files for every bucket that are individually sorted; but globally, the
> table would no longer be sorted.
> Would these joins work/disable themselves correctly in this case, or could it
> produce incorrect results? We might need a q file.
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