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From Todd Papaioannou <to...@yahoo-inc.com>
Subject Re: [VOTE] Release candidate
Date Sat, 07 May 2011 01:43:33 GMT

Can you provide some more details into what issues you are seeing with the
capacity scheduler? Is it just the docs don't match the code, or are you
seeing real issues with job scheduling?



On 5/6/11 5:49 PM, "Allen Wittenauer" <awittenauer@linkedin.com> wrote:

>On May 5, 2011, at 1:56 PM, Jakob Homan wrote:
>> +1
>> Downloaded, verified, tested on single node cluster to my
>> satisfaction.  We've also brought this release up on a sizable cluster
>> and checked its basic sanity.
>	All of you people doing single node tests are missing stuff.  For
>example, the regression in how the secondary namenode addr stuff works
>vs. 0.20.  
>	By far, the biggest problem we've found is that the capacity scheduler
>documentation doesn't actually match what the code does.  I have a hunch
>that the unit tests were written/change to match the outcome, rather than
>test what is supposed to happen.  For us, this breakage makes it unusable
>out of the box and we'll likely either go back to our (relatively stable)
>backport of 0.21's cap sched, try to fix the 0.20.203 code, or maybe even
>switch to a completely different scheduler.

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