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https://issues.apache.org/jira/browse/HBASE-8334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13630525#comment-13630525
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Lars Hofhansl commented on HBASE-8334:
--------------------------------------

MVCC should handle that. I.e. nothing is removed of there a scanner older than 
the memstoreTS and scanner won't see newer KVs.

+1 on patch for 0.95 and 0.98.
Let's leave it optional/default-off for 0.94.

                
> Enable essential column family support by default
> -------------------------------------------------
>
>                 Key: HBASE-8334
>                 URL: https://issues.apache.org/jira/browse/HBASE-8334
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 0.98.0, 0.95.1
>
>         Attachments: 8334.txt
>
>
> Essential column family support has gone through several iterations of 
> refinement.
> We should enable this feature by default.

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