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https://issues.apache.org/jira/browse/HBASE-7546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591160#comment-13591160
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Ted Yu commented on HBASE-7546:
-------------------------------
Table split modifies table metadata. I tend to think that a write lock is more
appropriate in this scenario.
Table snapshot, on the other hand, doesn't change table metadata. A read lock
would fit.
This way, we achieve mutual exclusion between the two operations.
> Obtain a table read lock on region split operations
> ---------------------------------------------------
>
> Key: HBASE-7546
> URL: https://issues.apache.org/jira/browse/HBASE-7546
> Project: HBase
> Issue Type: Bug
> Reporter: Enis Soztutar
> Assignee: Enis Soztutar
> Fix For: 0.95.0
>
> Attachments: hbase-7546_v1.patch, hbase-7546_v2.patch,
> hbase-7546_v3.patch
>
>
> As discussed in the parent issue HBASE-7305, we should be coordinating
> between splits and table operations to ensure that they don't happen at the
> same time. In this issue we will acquire shared read locks for region splits.
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