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https://issues.apache.org/jira/browse/HIVE-16295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16455520#comment-16455520
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Aaron Fabbri edited comment on HIVE-16295 at 4/26/18 11:08 PM:
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This is a really cool prototype [~stakiar], thank you for doing this. I don't
have much Hive knowledge but will try to spend some more time looking at the
code. I'm also happy to work w/ [[email protected]] on stabilizing the
_SUCCESS file manifest (which enumerates the files committed) if that works for
your dynamic partitioning problem.
edit: need more coffee.
was (Author: fabbri):
This is a really cool prototype [~stakiar], thank you for doing this. I don't
have much Hive knowledge but will try to spend some more time looking at the
code. I'm also happy to work w/ [[email protected]] on stabilizing the
_SUCCESS file manifest (which enumerates the uploaded-but-not-completed
multipart uploads to S3) if that works for your dynamic partitioning problem.
> Add support for using Hadoop's S3A OutputCommitter
> --------------------------------------------------
>
> Key: HIVE-16295
> URL: https://issues.apache.org/jira/browse/HIVE-16295
> Project: Hive
> Issue Type: Sub-task
> Reporter: Sahil Takiar
> Assignee: Sahil Takiar
> Priority: Major
> Attachments: HIVE-16295.1.WIP.patch, HIVE-16295.2.WIP.patch
>
>
> Hive doesn't have integration with Hadoop's {{OutputCommitter}}, it uses a
> {{NullOutputCommitter}} and uses its own commit logic spread across
> {{FileSinkOperator}}, {{MoveTask}}, and {{Hive}}.
> The Hadoop community is building an {{OutputCommitter}} that integrates with
> S3Guard and does a safe, coordinate commit of data on S3 inside individual
> tasks (HADOOP-13786). If Hive can integrate with this new {{OutputCommitter}}
> there would be a lot of benefits to Hive-on-S3:
> * Data is only written once; directly committing data at a task level means
> no renames are necessary
> * The commit is done safely, in a coordinated manner; duplicate tasks (from
> task retries or speculative execution) should not step on each other
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