Github user roshannaik commented on a diff in the pull request:
https://github.com/apache/storm/pull/2241#discussion_r129726539
--- Diff: conf/defaults.yaml ---
@@ -231,16 +228,13 @@ topology.multilang.serializer:
"org.apache.storm.multilang.JsonSerializer"
topology.shellbolt.max.pending: 100
topology.skip.missing.kryo.registrations: false
topology.max.task.parallelism: null
-topology.max.spout.pending: null
+topology.max.spout.pending: null # TODO: We dont need this any more
--- End diff --
Yes back-pressure is addressed. Described in the design doc. A couple
little things left realaed.. 1) Ensure metrics get updated when retrying to
publish to downstream Q that is full. 2) Remove max.spout.pending
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