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https://issues.apache.org/jira/browse/HBASE-8446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13644332#comment-13644332
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Matteo Bertozzi commented on HBASE-8446:
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{quote}Is it possible to pass a countdown latch to the above call() method, for 
testing ?{quote}
again, I'm not really sure what is the effect that you want to obtain...
injecting stuff in the client will not modify the snapshot flow, and it will 
not allow better control on the parallel behavior, since the client only send a 
request "do the snapshot" and it may take 0sec to Nsec

anyway, adding a new parameter to the client will make the API incompatible, 
unless we add a takeSnapshotForTesting() or similar called by the main one, but 
again I'm still missing the point. could you elaborate more on what is the 
effect/behavior that you want to obtain with that?
                
> Allow parallel snapshot of different tables
> -------------------------------------------
>
>                 Key: HBASE-8446
>                 URL: https://issues.apache.org/jira/browse/HBASE-8446
>             Project: HBase
>          Issue Type: Improvement
>          Components: snapshots
>    Affects Versions: 0.95.0
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Minor
>             Fix For: 0.95.2
>
>         Attachments: HBASE-8446-v0.patch, HBASE-8446-v1.patch
>
>
> currently only one snapshot at the time is allowed.
> Like for the restore, we should allow taking snapshot of different tables in 
> parallel.

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