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ASF GitHub Bot commented on GEODE-2109: --------------------------------------- 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 > calling submit on ExecutionService can cause exceptions to be lost > ------------------------------------------------------------------ > > Key: GEODE-2109 > URL: https://issues.apache.org/jira/browse/GEODE-2109 > Project: Geode > Issue Type: Bug > Components: regions > Reporter: Darrel Schneider > Assignee: Deepak Dixit > > Geode has a number of places that call submit on ExecutionService. The submit > method returns a Future object. If the caller makes sure it calls "get" on > the Future then all is well. But in many places geode is not calling get. In > that case if the Runnable that was submitted throws an exception it gets > stored in the get and never logged. This can make it very hard to diagnose > problems. > If the caller does not want to call get on the returned Future then it should > instead call the "execute" method. In that case the exception will be > unhandled and the unhandled exception handler code we have on the > LoggingThreadGroup class will cause the exception to be logged. > Here are the places that should be changed to use execute instead of submit: > org.apache.geode.internal.util.concurrent.CustomEntryConcurrentHashMap.clear() > org.apache.geode.internal.cache.DiskStoreImpl.executeDiskStoreTask(Runnable) > org.apache.geode.internal.cache.lru.HeapEvictor.onEvent(MemoryEvent) > org.apache.geode.distributed.internal.InternalLocator.restartWithDS(InternalDistributedSystem, > GemFireCacheImpl) > org.apache.geode.distributed.internal.FunctionExecutionPooledExecutor.FunctionExecutionPooledExecutor(BlockingQueue<Runnable>, > int, PoolStatHelper, ThreadFactory, int, boolean) > org.apache.geode.internal.cache.PRHARedundancyProvider.scheduleCreateMissingBuckets() > org.apache.geode.distributed.internal.InternalLocator.startSharedConfigurationService(GemFireCacheImpl) > org.apache.geode.cache.client.internal.SingleHopClientExecutor.submitTask(Runnable) > org.apache.geode.management.internal.FederatingManager.submitTask(Callable<DistributedMember>) -- This message was sent by Atlassian JIRA (v6.3.4#6332)