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https://issues.apache.org/jira/browse/HBASE-4603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13129295#comment-13129295
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Jonathan Gray commented on HBASE-4603:
--------------------------------------

There was a nice param in HBASE-3380 that is in 90 but not 92/trunk.  I'm going 
to see if we can get that brought into the active branches, then we can just 
set the maxServers config to the # of RS set to start, and then it will just 
work instantly w/o having to wait for this interval/sleep loop.
                
> Uneeded sleep time for tests in 
> hbase.master.ServerManager#waitForRegionServers
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-4603
>                 URL: https://issues.apache.org/jira/browse/HBASE-4603
>             Project: HBase
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 0.92.0
>         Environment: all.
>            Reporter: nkeywal
>            Assignee: nkeywal
>            Priority: Minor
>         Attachments: 20111017_4603_MiniHBaseCluster.patch
>
>
> This functions waits for at least 2 times 
> hbase.master.wait.on.regionservers.interval, defaulted at 3 seconds, i.e. 6 
> seconds for every mini hbase cluster starts.
> In the context of a mini cluster, it's not useful, as the regions servers are 
> created locally.
> Changing this to a lower value such as 100ms gives 5.8 second per HBase 
> cluser start. It should lower the build time on the apache server by more 
> than 8%.
> Beeing more aggressive (removing all the wait time) could be possible as 
> well. To be studied later.

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