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From "Francis Liu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HCATALOG-189) Zookpeeper based revision manager for HBase Storage Driver
Date Wed, 21 Dec 2011 07:48:31 GMT

    [ https://issues.apache.org/jira/browse/HCATALOG-189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13173927#comment-13173927
] 

Francis Liu commented on HCATALOG-189:
--------------------------------------

made a small change in build.xml for -D testcase.

Committed in trunk, thanks Vandana.
                
> Zookpeeper based revision manager for HBase Storage Driver
> ----------------------------------------------------------
>
>                 Key: HCATALOG-189
>                 URL: https://issues.apache.org/jira/browse/HCATALOG-189
>             Project: HCatalog
>          Issue Type: New Feature
>    Affects Versions: 0.3
>            Reporter: Vandana Ayyalasomayajula
>            Assignee: Vandana Ayyalasomayajula
>            Priority: Minor
>              Labels: hbase, storage_drivers
>         Attachments: revision-mgmt-core-09.patch
>
>
> A revision manager for HBase would provide revision numbers for each of the record written
using HBase output storage driver in place of timestamps. In addition, the revision manager
provides capabilities to take snapshots of HBase tables. Snapshots help in achieving repeatable
reads which is a requirement for map-reduce paradigm. 

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