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https://issues.apache.org/jira/browse/HBASE-10254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13858571#comment-13858571
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Anoop Sam John commented on HBASE-10254:
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So when the cell does not exist, u dont want to create a new one with 0 value 
right?  Yes this will be a BC issue if changing the current way. We can do it 
in optional way.

> Optionally return null when attempting to Increment KeyValue that doesn't 
> exist
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-10254
>                 URL: https://issues.apache.org/jira/browse/HBASE-10254
>             Project: HBase
>          Issue Type: Bug
>            Reporter: James Taylor
>
> Instead of creating a new KeyValue starting from 0 when an Increment is done 
> on a row that doesn't exist, we should optionally return null. A Get is 
> already being done, so it's easy to detect this case. This can be done in a 
> backward compatible manner.



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