Colm O hEigeartaigh created SENTRY-966:
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Summary: SqoopAuthBindingSingleton uses bad double check locking
idiom
Key: SENTRY-966
URL: https://issues.apache.org/jira/browse/SENTRY-966
Project: Sentry
Issue Type: Bug
Components: Sqoop plugin
Reporter: Colm O hEigeartaigh
Fix For: 1.7.0
The SqoopAuthBindingSingleton uses the bad double check locking idiom:
http://www.javaworld.com/article/2074979/java-concurrency/double-checked-locking--clever--but-broken.html
An easy solution is just to make the variable volatile, but a much better
approach is to use the Lazy init holder class idiom, which avoid
synchronization altogether.
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