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https://issues.apache.org/jira/browse/HBASE-18142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16104838#comment-16104838
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Sahil Aggarwal commented on HBASE-18142:
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Noob quest:

On looking at  _deleteall_internal in table.rb, if row name is a Hash then we 
call _deleterows_internal but here we don't honor the timestamp provided in row 
hash and use latest timestamp, could this be the reason we are deleting all the 
versions of all the cells in that row?

> Deletion of a cell deletes the previous versions too
> ----------------------------------------------------
>
>                 Key: HBASE-18142
>                 URL: https://issues.apache.org/jira/browse/HBASE-18142
>             Project: HBase
>          Issue Type: Bug
>          Components: API
>            Reporter: Karthick
>              Labels: beginner
>
> When I tried to delete a cell using it's timestamp in the Hbase Shell, the 
> previous versions of the same cell also got deleted. But when I tried the 
> same using the Java API, then the previous versions are not deleted and I can 
> retrive the previous values.
> https://github.com/apache/hbase/blob/master/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Delete.java
> see this file to fix the issue. This method (public Delete addColumns(final 
> byte [] family, final byte [] qualifier, final long timestamp)) only deletes 
> the current version of the cell. The previous versions are not deleted.



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