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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6942) Endpoint implementation for bulk delete rows
Date Sun, 14 Oct 2012 14:05:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475839#comment-13475839
] 

Anoop Sam John commented on HBASE-6942:
---------------------------------------

Regarding passing the rowBatchSize in attributes of Scan, I am in half mind Ted..  As this
attribute is related with the delete op and not Scan...  Requesting your opinion also Lars..
I was thinking of enhancing this for doing all kind of deletes. We have CF delete, column
delete, version delete and time based KVs delete etc... Ideally better we can support all
these kind of deletes.  What is in my mind is to accept a Delete object as a template in this
Endpoint...  Well for Delete we need some byte[] as rowkey.. Any dummy(empty byte[]) is okey..
 What we need is to follow that Delete object create Delete objects in Endpoint. Thougts??

Yes Ted in that case we can pass back the number of KVs deleted..  
                
> 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, HBASE-6942_V3.patch, HBASE-6942_V4.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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