Marcelo Vanzin created SPARK-20191:
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Summary: RackResolver not correctly being overridden in YARN tests
Key: SPARK-20191
URL: https://issues.apache.org/jira/browse/SPARK-20191
Project: Spark
Issue Type: Bug
Components: YARN
Affects Versions: 2.0.3, 2.1.1, 2.2.0
Reporter: Marcelo Vanzin
YARN tests currently try to override YARN's RackResolver, but that class
self-initializes the first time it's called, storing state in static variables
and ignoring any further config params that might override the initial behavior.
So we need a better solution for Spark tests, so that tests such as
{{LocalityPlacementStrategySuite}} don't flood the DNS server with requests
(making the test really slow in certain environments).
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