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From Patrick Wendell <>
Subject Avoiding unnecessary build changes until tests are in better shape
Date Wed, 05 Aug 2015 18:24:56 GMT
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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