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https://issues.apache.org/jira/browse/HBASE-3967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13050014#comment-13050014
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Kannan Muthukkaruppan commented on HBASE-3967:
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Stack: <<If you removed the check for KV>> -- just making sure did you mean 
remove the separate checks for Key class and Value class? It might still be a 
good idea to check that it is at least a subclass of the expected class, no? Or 
does that check already happen down the stream?

> Support deletes in HFileOutputFormat based bulk import mechanism
> ----------------------------------------------------------------
>
>                 Key: HBASE-3967
>                 URL: https://issues.apache.org/jira/browse/HBASE-3967
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Kannan Muthukkaruppan
>            Assignee: Bogdan-Alexandru Matican
>
> During bulk imports, it'll be useful to be able to do delete mutations 
> (either to delete data that already exists in HBase or was inserted earlier 
> during this run of the import). 
> For example, we have a use case, where we are processing a log of data which 
> may have both inserts and deletes in the mix and we want to upload that into 
> HBase using the bulk import mechanism.

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