Jinghui Wang created MAPREDUCE-5935:
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Summary: TestMRServerPorts#testTaskTrackerPorts fails with null
pointer exception.
Key: MAPREDUCE-5935
URL: https://issues.apache.org/jira/browse/MAPREDUCE-5935
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: test
Affects Versions: 1.2.1, 1.2.0, 1.1.1
Reporter: Jinghui Wang
Assignee: Jinghui Wang
Fix For: 1.2.2
The exception is caused by a race condition. The test case calls
Jobtracker.offerservice in a seperate thread JTRunner, which initializes the
class variable FileSystem fs. In the main thread it tries to close fs in the
finally block of code, but at that point jt.fs might still not be initialized,
thus causing the NPE.
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