Hi, I noticed that when using org.apache.storm.trident.Stream#slidingWindow(...), the org.apache.storm.trident.operation.Operation#prepare method is not invoked on the passed aggregator. This causes the org.apache.storm.trident.operation.impl.GroupedAggregator to be unusable in a sliding window scenario.
Shouldn't 'prepare' be invoked for the aggregator in org.apache.storm.trident.windowing.WindowTridentProcessor#prepare? I am using Storm 1.1.0 Thank you
