Hi, All. I evaluate Storm performance with WordCount example.
In spout, I removed "Utils.sleep(100)" in RandomSentenceSpout.java. So, it emitted sentences very fast. Whenever I run WordCountTopology, "split" bolt dead with below messages and It is re-launched. 2016-10-25 20:37:39.395 STDERR [INFO] java.lang.OutOfMemoryError: GC overhead limit exceeded 2016-10-25 20:37:39.398 STDERR [INFO] Dumping heap to artifacts/heapdump ... I increased worker.heap.memory.mb as 2GB. Obviously, split bolt was overloaded due to extensive inputs from a spout and simple execute logics (splitting a sentence into words and sending them to a count bolt). So, I changed the number of splits and counts while I kept using 1 spout, but I still saw this situation. Any advice will be welcome. Thanks, Junguk
