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https://issues.apache.org/jira/browse/HBASE-18948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16193368#comment-16193368
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Andrew Purtell commented on HBASE-18948:
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I think this requires more than a doc update. We should review RPC handling. We
allow clients to build raw cell serializations, potentially including tags, and
submit them. I can't say if they are stripped out or not. It will take a code
review to be certain (hint hint). It is definitely true tags are stripped out
when sending RPC responses, except for the replication client, which uses a
special codec that includes tags, so all cell state including tags makes it to
the target cluster. So we also need a point of clarification that custom
replication endpoints (like Lily's indexer) would receive tags. There is a
related JIRA about security enhancements for replication that would be good to
take up.
> HBase tags are server side only.
> --------------------------------
>
> Key: HBASE-18948
> URL: https://issues.apache.org/jira/browse/HBASE-18948
> Project: HBase
> Issue Type: Improvement
> Components: documentation
> Reporter: Thiriguna Bharat Rao
> Assignee: Thiriguna Bharat Rao
> Priority: Minor
> Fix For: 3.0.0
>
> Attachments: HBASE-18948.patch
>
>
> HBase tags are server side only. In the Apache HBase documentation, in
> section 62.1.1 http://hbase.apache.org/book.html#_implementation_details , I
> am going to add a sentence to state explicitly that "Tags are not available
> for get/set from client operations including coprocessors".
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