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https://issues.apache.org/jira/browse/LUCENE-3429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13104385#comment-13104385
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Dawid Weiss commented on LUCENE-3429:
-------------------------------------

Mike, Robert, Mark -- can you confirm my understanding of this snippet:
{code}
if (doFail && (Thread.currentThread().getName().equals("main") 
          || Thread.currentThread().getName().equals("Main Thread"))) {
{code}
what was it for (thread name checking)? Can this method be called from threads 
other than the main junit thread (and in such case shouldn't go into the if 
block?).

> improve build system when tests hang
> ------------------------------------
>
>                 Key: LUCENE-3429
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3429
>             Project: Lucene - Java
>          Issue Type: Test
>            Reporter: Robert Muir
>             Fix For: 3.5, 4.0
>
>         Attachments: LUCENE-3429.patch, LUCENE-3429.patch
>
>
> Currently, if tests hang in hudson it can go hung for days until we manually 
> kill it.
> The problem is that when a hang happens its probably serious, what we want to 
> do (I think), is:
> # time out the build.
> # ensure we have enough debugging information to hopefully fix any hang.
> So I think the ideal solution would be:
> # add a sysprop "-D" that LuceneTestCase respects, it could default to no 
> timeout at all (some value like zero).
> # when a timeout is set, LuceneTestCase spawns an additional timer thread for 
> the test class? method?
> # if the timeout is exceeded, LuceneTestCase dumps all thread/stack 
> information, random seed information to hopefully reproduce the hang, and 
> fails the test.
> # nightly builds would pass some reasonable -D for each test.
> separately, I think we should have an "ant-level" timeout for the whole 
> build, in case it goes completely crazy (e.g. jvm completely hangs or 
> something else), just as an additional safety.

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