Github user upthewaterspout commented on the issue: https://github.com/apache/geode/pull/296 Hi @deepakddixit Sorry for the slow response. I'm a little concerned that with your changes to the test in ef4d38d, the test is no longer actually testing what happens if the runnable passed to the executor throws an exception. I think those changes *do* show that the problem is not with SystemErrRule, since with your change the test passes consistently. What that means is that there might be a product issue. I did a little bit of investigation, and I found that if I set an uncaught exception handler in the product, your original test passes consistently. I'm not quite sure why the default uncaught exception handler was not consistently working, but I think it's better to send the error to the log anyway. I stuck my changes up as a pull request to your branch if want to look at them. Let me know what you think, if this looks good to you I can merge this stuff: https://github.com/deepakddixit/incubator-geode/pull/1
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