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https://issues.apache.org/jira/browse/HIVE-3171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13442354#comment-13442354
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Carl Steinbach commented on HIVE-3171:
--------------------------------------
@Namit: The Apache Hive Project Bylaws are located here:
https://cwiki.apache.org/confluence/display/Hive/Bylaws
The bylaws explicitly prohibit committers from voting on their own patches, but
they don't prohibit committers from committing their own patches as long as
another committer has already reviewed and +1'd the patch. It's also worth
noting that the bylaws stipulate that the +1 vote must be sent to dev@hive, and
that 24 hours must elapse between the first +1 vote and the point at which the
patch is committed.
> Bucketed sort merge join doesn't work when multiple files exist for small
> alias
> -------------------------------------------------------------------------------
>
> Key: HIVE-3171
> URL: https://issues.apache.org/jira/browse/HIVE-3171
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.10.0
> Reporter: Joey Echeverria
> Assignee: Navis
> Labels: bucketing, joins, partitioning
> Attachments: HIVE-3171.1.patch.txt
>
>
> Executing a query with the MAPJOIN hint and the bucketed sort merge join
> optimizations enabled:
> {noformat}
> set hive.input.format=org.apache.hadoop.hive.ql.io.BucketizedHiveInputFormat;
> set hive.optimize.bucketmapjoin = true;
> set hive.optimize.bucketmapjoin.sortedmerge = true;
> {noformat}
> works fine with partitioned tables if there is only one partition in the
> table. However, if you add a second partition, Hive attempts to do a regular
> map-side join which can fail because the tables are too large. Hive ought to
> be able to still do the bucketed sort merge join with partitions.
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