Robert Muir created LUCENE-4460:
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             Summary: Test exception handling better/easier than 
testThreadInterruptDeadlock()
                 Key: LUCENE-4460
                 URL: https://issues.apache.org/jira/browse/LUCENE-4460
             Project: Lucene - Core
          Issue Type: Bug
          Components: general/test
            Reporter: Robert Muir


currently the fact that MockDirectoryWrapper has throttlers and such that 
sleep, combined with the fact this test interrupts, makes a good test for 
exception handling.

The problem is this is really crappy to debug: things dont reproduce, you have 
to use hundreds or thousands of iterations, etc etc.

I think it would be better if we made it possible for MockIndexInput to throw 
random exceptions like MockIndexOutput and had a single threaded test that just 
threw random exceptions? This way it would reproduce...


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