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https://issues.apache.org/jira/browse/HBASE-5515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13221786#comment-13221786
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Phabricator commented on HBASE-5515:
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lhofhansl has commented on the revision "HBASE-5515 [jira] Add a processRow API
that supports atomic multiple reads and writes on a row".
We're getting a lot of similar but slightly different APIs now.
This is not a for a fixed use case, but basically this a command pattern
where we pass an arbitrary command to the server execution there.
The RowProcessor implementation needs to exist in the RegionServer's
classpath, right?
Like atomic multi row mutations, maybe this should only be accessible to a
Coprocessor endpoint (see final resolution for HBASE-5229), and not to the
public HTable API.
Pie in the sky: It would be nice if the command itself could be implemented
as a coprocessor endpoint (would need to expose locks and mvcc to
region-coprocessors, so maybe that's overkill).
REVISION DETAIL
https://reviews.facebook.net/D2067
> Add a processRow API that supports atomic multiple reads and writes on a row
> ----------------------------------------------------------------------------
>
> Key: HBASE-5515
> URL: https://issues.apache.org/jira/browse/HBASE-5515
> Project: HBase
> Issue Type: New Feature
> Reporter: Scott Chen
> Assignee: Scott Chen
> Attachments: HBASE-5515.D2067.1.patch, HBASE-5515.D2067.2.patch,
> HBASE-5515.D2067.3.patch, HBASE-5515.D2067.4.patch
>
>
> We have modified HRegion.java internally to do some atomic row processing. It
> will be nice to have a plugable API for this.
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