Github user danny0405 commented on the issue: https://github.com/apache/storm/pull/2319 @HeartSaVioR @revans2 i have change the default backend to memory one, also i change the distribute mode to asynchronous i chose a rocks-db backend because when the cluster goes to large, assignments-info will takes more memory cache[ memory mode ], but if this is not a factor, we can just remote it
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