unit tests which alter persistent state should call cleanup before running
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Key: HDFS-2967
URL: https://issues.apache.org/jira/browse/HDFS-2967
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Colin Patrick McCabe
Priority: Minor
I did a little test, and found that aborting unit tests halfway through (for
example, with the stop button in Eclipse) will NOT invoke the @After functions.
Needless to say, this could have bad consequences for test users. A developer
might press control-C in the middle of a unit test, and then find that he was
unable to successfully re-run that test again because of the lingering state.
A Jenkins build machine might experience a JVM crash because of an
out-of-memory condition, and then find that all builds turned red because a
unit test failed to clean up the state which it created.
I think that in HDFS tests which alter persistent state, we probably should
invoke the @After functions from a @Before function, just to make sure that the
necessary cleanup is done.
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