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From "Jerry Lam (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6942) Endpoint implementation for bulk delete rows
Date Fri, 12 Oct 2012 21:41:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475382#comment-13475382
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Jerry Lam commented on HBASE-6942:
----------------------------------

In my use case, I use extensively the version delete marker because I need to delete a specific
version of a cell (row key, CF, qualifier, timestamp). I have a mapreduce job that will run
across some regions and based on some business rules, some of the cells will be deleted in
the table using the version delete marker. The business rules for deletion are scoped to each
column family at a time. Therefore, there are no logically dependency of deletions between
column families.

                
> Endpoint implementation for bulk delete rows
> --------------------------------------------
>
>                 Key: HBASE-6942
>                 URL: https://issues.apache.org/jira/browse/HBASE-6942
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors, Performance
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 0.94.3, 0.96.0
>
>         Attachments: HBASE-6942.patch, HBASE-6942_V2.patch
>
>
> We can provide an end point implementation for doing a bulk deletion of rows(based on
a scan) at the server side. This can reduce the time taken for such an operation as right
now it need to do a scan to client and issue delete(s) using rowkeys.
> Query like  delete from table1 where...

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