[jira] Commented: (HBASE-669) MultiRegion transactions with Optimistic Concurrency Control

["stack (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621978#action_12621978 ] 

stack commented on HBASE-669:
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I tried to apply last patch Clint. Fails in HTable.  I'd like to commit this.  It has a bunch of unit tests so its at least basically working.  Blocker is lack of package documentation.  Please add a package.html (see thrift package for example) or a package-info.java (e.g. mapred package) that explains what this is all about with pointer to the OCC paper and a basic howto on what configuration is needed to make a transactional hbase float.  Thanks Clint.

> MultiRegion transactions with Optimistic Concurrency Control
> ------------------------------------------------------------
>
>                 Key: HBASE-669
>                 URL: https://issues.apache.org/jira/browse/HBASE-669
>             Project: Hadoop HBase
>          Issue Type: New Feature
>          Components: client, ipc, regionserver
>            Reporter: Clint Morgan
>         Attachments: hbase-669-v2.patch, hbase-669-v3.patch, hbase-669-v4.patch, hbase-669-v5.patch, hbase-669.patch, hbase-669.patch
>
>
> We have a need for ACID transactions across tables. This issue is about adding transactions which span multiple regions.  We do not envision many competing writes, and will be read-dominated in general. This makes Optimistic Concurrency Control (OCC) seem like the way to go.

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