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https://issues.apache.org/jira/browse/HBASE-5991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13510096#comment-13510096
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Enis Soztutar commented on HBASE-5991:
--------------------------------------

Phabricator indicates that it has been committed to 0.89-fb. I'm working on a 
trunk port for this. 
                
> Introduce sequential ZNode based read/write locks 
> --------------------------------------------------
>
>                 Key: HBASE-5991
>                 URL: https://issues.apache.org/jira/browse/HBASE-5991
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Alex Feinberg
>            Assignee: Alex Feinberg
>             Fix For: 0.89-fb
>
>
> This is a continuation of HBASE-5494:
> Currently table-level write locks have been implemented using non-sequential 
> ZNodes as part of HBASE-5494 and committed to 89-fb branch. This issue is to 
> track converting the table-level locks to sequential ZNodes and supporting 
> read-write locks, as to solve the issue of preventing schema changes during 
> region splits or merges.

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