DNS needs to be stubbed for tests
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Key: HDFS-1837
URL: https://issues.apache.org/jira/browse/HDFS-1837
Project: Hadoop HDFS
Issue Type: Bug
Components: test
Affects Versions: 0.23.0
Reporter: Daryn Sharp
Assignee: Daryn Sharp
The tests use various short hostnames that are assumed to not exist. Ex. host,
somehost, host{1-5}, foo, etc. If the host really does resolve then it
triggers a hardcoded 45 retry attempts. Adding 45s+ to a negative test really
slows down the test suite.
Some people may be mildly unlucky to have a few of these dummy hostnames
resolve in their domain. They will take a penalty on the magnitude of minutes.
Those of us unfortunate enough to have wildcard dns resolution are unable to
run many of the tests w/o unplugging from the network because the test suite
won't finish (ex. I killed a run after 16 hours).
The tests need to have dns stubbed out to only resolve the host itself and
localhost.
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