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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-669) MultiRegion transactions with Optimistic Concurrency Control
Date Tue, 12 Aug 2008 21:11:44 GMT

    [ 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:

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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