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https://issues.apache.org/jira/browse/HBASE-9951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13821549#comment-13821549
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Anoop Sam John commented on HBASE-9951:
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Can use cell level tags for this purpose? Cell tags will get written to WAL also
> Tags for HLogKey
> ----------------
>
> Key: HBASE-9951
> URL: https://issues.apache.org/jira/browse/HBASE-9951
> Project: HBase
> Issue Type: New Feature
> Components: wal
> Reporter: Ishan Chhabra
>
> Similar to the Cell Interface, adding tags for the HLogKey could be useful
> for multiple scenarios.
> My primary use cases are driven from replication though:
> 1. To record whether a WALEdit should be forwarded further to other clusters
> (see [#HBASE-9934])
> 2. To record which clusters the WALEdit should be forwarded to (for Row level
> replication)
> 3. To mark a record for not replicating (these are some special cases in our
> usage and cannot be handled using a separate column family)
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