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From "Mike Drob" <md...@mdrob.com>
Subject Re: Review Request 19352: ACCUMULO-2488 - refined balance check for concurrent randomwalk
Date Tue, 18 Mar 2014 16:21:47 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/19352/#review37560
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src/server/src/main/java/org/apache/accumulo/server/test/randomwalk/concurrent/CheckBalance.java
<https://reviews.apache.org/r/19352/#comment69160>

    This could all be pushed into the sd method, since I don't think total and average are
used anywhere else.



src/server/src/main/java/org/apache/accumulo/server/test/randomwalk/concurrent/CheckBalance.java
<https://reviews.apache.org/r/19352/#comment69159>

    This comment does not seem accurate.


- Mike Drob


On March 18, 2014, 1:18 p.m., Bill Havanki wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/19352/
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> 
> (Updated March 18, 2014, 1:18 p.m.)
> 
> 
> Review request for accumulo and Mike Drob.
> 
> 
> Bugs: ACCUMULO-2488
>     https://issues.apache.org/jira/browse/ACCUMULO-2488
> 
> 
> Repository: accumulo
> 
> 
> Description
> -------
> 
> The Concurrent randomwalk test used to consider servers unbalanced if any server's tablet
count differed from the cluster average by more than a fifth of the average or by one, whichever
was larger. This would cause failures under typical balancings from the default balancer.
> 
> This commit changes the criterion for an unbalanced server to be double the standard
deviation from the cluster average.
> 
> 
> Diffs
> -----
> 
>   src/server/src/main/java/org/apache/accumulo/server/test/randomwalk/concurrent/CheckBalance.java
d00e2b4 
> 
> Diff: https://reviews.apache.org/r/19352/diff/
> 
> 
> Testing
> -------
> 
> Ran Concurrent randomwalk three times on 7-node cluster.
> 
> 
> Thanks,
> 
> Bill Havanki
> 
>


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