ChunHao updated HBASE-18142:
    Comment: was deleted

(was: One of the rules of current rubocop is _Class has too many lines_. 
[573/100], but in the past rubocop, it seems doesn't have this rule. 

Does the current rubocop have a wrong config?)

> 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
>    Affects Versions: 3.0.0
>            Reporter: Karthick
>            Assignee: ChunHao
>              Labels: beginner
>             Fix For: 3.0.0
>         Attachments: HBASE-18142.master.v0.patch, 
> HBASE-18142.master.v1.patch, HBASE-18142.master.v2.patch, 
> HBASE-18142.master.v3.patch, HBASE-18142.master.v4.patch, 
> HBASE-18142.master.v5.patch
> 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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