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From Josh Rosen <>
Subject Re: Avoiding unnecessary build changes until tests are in better shape
Date Wed, 05 Aug 2015 18:41:45 GMT
+1.  I've been holding off on reviewing / merging patches like the 
run-tests-jenkins Python refactoring for exactly this reason.

On 8/5/15 11:24 AM, Patrick Wendell wrote:
> Hey All,
> Was wondering if people would be willing to avoid merging build
> changes until we have put the tests in better shape. The reason is
> that build changes are the most likely to cause downstream issues with
> the test matrix and it's very difficult to reverse engineer which
> patches caused which problems when the tests are not in a stable
> state. For instance, the updates to Hive 1.2.1 caused cascading
> failures that have lasted several days now and in the mean time a few
> other build related patches were also merged - as these pile up it
> gets harder for us to have confidence those other patches didn't
> introduce problems.
> - Patrick
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