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https://issues.apache.org/jira/browse/PHOENIX-1677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Taylor updated PHOENIX-1677:
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    Attachment: PHOENIX-1677_v2.patch

Simpler version that hopefully solves the issue. Please let me know, 
[~mujtabachohan], and if you can put together a unit test for this, that would 
be much appreciated. 

[~lhofhansl] - would you mind reviewing? We'll end up just defaulting to what 
HBase does or what our ProtectedHConnection does at SFDC.

> Immutable index deadlocks when number of guideposts are one half of thread 
> pool size
> ------------------------------------------------------------------------------------
>
>                 Key: PHOENIX-1677
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1677
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.0.0, 4.3
>            Reporter: Mujtaba Chohan
>            Assignee: James Taylor
>         Attachments: PHOENIX-1677_v2.patch
>
>
> If total number of parallel iterators + mutation count exceeds Phoenix thread 
> pool size then immutable index remains at 0 rows with no activity on client 
> and server.
> Ex. Only with guide post count of 64 or lower does immutable index gets build 
> with default 128 thread pool. By changing guide post width to get with >64 
> guideposts, index fails to build. Also if thread pool size is lowered from 
> 128 then index fails to build for 64 guide posts.
> Let me know if you need a utest as I think it would be easy to repro in it 
> too.



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