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https://issues.apache.org/jira/browse/HBASE-14730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15060653#comment-15060653
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huaxiang sun commented on HBASE-14730:
--------------------------------------

[~anoop.hbase] I checked the master branch, the v2 writer is gone, 
HFileWriterImpl is v3. I tried to search the boolean you mentioned and could 
not find it. The only thing I found is that in OffheapKeyValue, there is a 
boolean hasTag, which makes getTagsLength() faster when there is no tag. 
Thanks. 

> region server needs to log warnings when there are attributes configured for 
> cells with hfile v2
> ------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-14730
>                 URL: https://issues.apache.org/jira/browse/HBASE-14730
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 1.0.0, 1.1.0, 1.2.0
>            Reporter: huaxiang sun
>            Assignee: huaxiang sun
>         Attachments: HBASE-14730-v001-1.2.0.patch, HBASE-14730-v001.patch
>
>
> User can configure cell attributes with hfile.format.version 2. When cells 
> are flushed from memStore to Hfile, attributes are not saved. Warnings need 
> to be logged.



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