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https://issues.apache.org/jira/browse/HBASE-4507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118521#comment-13118521
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Todd Lipcon commented on HBASE-4507:
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bq. So, each time we set a region location (hostname + port + startcode), we'd
also update a new column, say info:editid, which would have a uuid value. We'd
then do checkAndPut on the info:editid column?
Yep, exactly. With this method we wouldn't have to change/add APIs here...
bq. We'd still need to read whatever this value was at start of region open.
Right, but you have to do that with the timestamp method, too.
> Create checkAndPut variant that exposes timestamp / UUID
> --------------------------------------------------------
>
> Key: HBASE-4507
> URL: https://issues.apache.org/jira/browse/HBASE-4507
> Project: HBase
> Issue Type: Sub-task
> Reporter: Ted Yu
> Assignee: stack
>
> Michael checked the checkAndPut which doesn't expose timestamp. A variant of
> checkAndPut should be created to expose timestamp which is written into a
> column specified by additional parameters.
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