Github user arunmahadevan commented on the pull request:
https://github.com/apache/storm/pull/893#issuecomment-158126825
@dossett it appears that the component configuration is merged with the
global storm config. This happens when the topology is constructed and
serialized. The merged config is then passed to `prepare`, so if the map passed
to prepare is updated, it does not seem to have any effect.
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