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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8446) Allow parallel snapshot of different tables
Date Mon, 29 Apr 2013 04:34:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13644257#comment-13644257
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Ted Yu commented on HBASE-8446:
-------------------------------

{code}
    return execute(new MasterAdminCallable<TakeSnapshotResponse>() {
      @Override
      public TakeSnapshotResponse call() throws ServiceException {
        return masterAdmin.snapshot(null, request);
{code}
Is it possible to pass a countdown latch to the above call() method, for testing ?
TestFlushSnapshotFromClient#testConcurrentSnapshottingAttempts would pass the same latch with
initial value of 2 to takeSnapshotAsync(). In the call() method, countDown() is called on
the latch followed by await().
                
> 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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