I have a more cynical view of the Heron announcement. But let's remember that Twitter ran Storm in production for over 4 years at massive scale, and whatever improvements Heron represents, they thought the abstraction was important enough to reimplement the entire Storm API in the new system.
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that reliability wasn't the case for at least one of the internet heavyweights, quite the opposite [1]
[1] http://blog.acolyer.org/2015/06/15/twitter-heron-stream-proc...
I have a more cynical view of the Heron announcement. But let's remember that Twitter ran Storm in production for over 4 years at massive scale, and whatever improvements Heron represents, they thought the abstraction was important enough to reimplement the entire Storm API in the new system.