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https://issues.apache.org/jira/browse/HBASE-7848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13622574#comment-13622574
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Jonathan Hsieh commented on HBASE-7848:
---------------------------------------
We currently do not block writes/puts while snapshots are going on (and we
don't really want to from the client point of view). The table locks are
blocking changes to the table schema and region splits and region merges.
Future fancier snapshots may try to shrink the window of time where we do not
honor snapshot/point in time/causal consistency.
> Use ZK-based read/write lock to make flush-type snapshot robust against table
> enable/disable/alter
> --------------------------------------------------------------------------------------------------
>
> Key: HBASE-7848
> URL: https://issues.apache.org/jira/browse/HBASE-7848
> Project: HBase
> Issue Type: Improvement
> Components: snapshots
> Affects Versions: 0.96.0
> Reporter: Ted Yu
> Assignee: Ted Yu
> Fix For: 0.95.0, 0.98.0
>
> Attachments: 7848-v1.txt, 7848-v2.txt, hbase-7848_v2.patch,
> hbase-7848_v3.patch
>
>
> Current region split following flush would fail snapshot.
> We can utilize ZK-based read/write lock to make flush-type snapshot robust
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