Github user revans2 commented on the issue:
https://github.com/apache/storm/pull/2016
@arunmahadevan yes this is showing up in a real topology (part of
monitoring and alerting at Yahoo). And yes some of these topologies are really
large. They are machine generated from a number of different user provided
configurations, which is why it can grow to be so large. Having fewer big
topologies instead of many small topologies makes them more efficient because
they only have to read/process the metrics once. There are ways to work around
it on the user side, but this felt like a cleaner solution overall.
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