SamplingAccumulatorTest hangs on Java 1.6.0u26 [LUCENE-3275]

on the mac, a system update pushed out an upgrade to 1.6.0u26

basically, if i run 'ant test' from the faceting module, my jre completely hangs (0% cpu, won't even respond to kill -QUIT to print a stacktrace).
This is reproducable... it always happens inside SamplingAccumulatorTest.

Of course if i run this test by itself, or anything else, it doesn't want to hang... but you should be able to reproduce by running 'ant test -Dtests.threadspercpu=0' which runs all tests sequentially.

Acts like http://forums.oracle.com/forums/thread.jspa?threadID=2246699

I think this JRE version (update 26) is broken. If your mac asks you to upgrade, just say no.

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Migrated from [LUCENE-3275](https://issues.apache.org/jira/browse/LUCENE-3275) by Robert Muir (@rmuir), updated Jul 05 2011