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https://issues.apache.org/jira/browse/LUCENE-2338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849352#action_12849352
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Uwe Schindler commented on LUCENE-2338:
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Hi Sanjoy,
just grep on "printStackTrace(" to find test cases that simply print out
stacktraces and ignore exceptions. Possible examples can be seen also in
related issues like LUCENE-1814.
Thanks for your interest in fixing this!
> Some tests catch Exceptions in separate threads and just print a stack trace
> - the test does not fail
> -----------------------------------------------------------------------------------------------------
>
> Key: LUCENE-2338
> URL: https://issues.apache.org/jira/browse/LUCENE-2338
> Project: Lucene - Java
> Issue Type: Test
> Reporter: Uwe Schindler
>
> Some tests catch Exceptions in separate threads and just print a stack trace
> - the test does not fail. The test should fail. Since LUCENE-2274, the
> LuceneTestCase(J4) class installs an UncaughtExceptionHandler, so this type
> of catching and solely printing a Stack trace is a bad idea. Problem is, that
> the run() method of threads is not allowed to throw checked Exceptions.
> Two possibilities:
> - Catch checked Exceptions in the run() method and wrap into RuntimeException
> or call Assert.fail() instead
> - Use Executors
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