Hello, I had a heap size problem within the *prepare* method of my bolts. Therefore, I tried to increase the heap size by setting the values in the topology config:
conf.put(Config.WORKER_CHILDOPTS, "-Xmx4g"); conf.put(Config.SUPERVISOR_CHILDOPTS, "-Xmx4g"); But the out of memory exception remained! I checked the worker node and the supervisor processes were still executed with "-Xmx768m". In the next step I set the same values globally in the *storm.yaml* and restarted the supervisor. Now the supervisor uses the "-Xmx4g" parameter and the out of memory exception was gone. I'm just wondering why it makes any difference to set these parameters globally in the *storm.yaml* or in the topology config? Why are the settings in the topology config not working? Furthermore the Storm UI shows the correct parameters but they are not used by the supervisor. Thanks! Martin
