Github user kkasravi commented on a diff in the pull request:
https://github.com/apache/incubator-gearpump/pull/77#discussion_r76534338
--- Diff:
external/kafka/src/main/scala/org/apache/gearpump/streaming/kafka/lib/source/consumer/FetchThread.scala
---
@@ -133,19 +133,21 @@ private[kafka] class FetchThread(
/**
* fetch message from each TopicAndPartition in a round-robin way
+ *
+ * @return whether to fetch more messages
--- End diff --
akka-streams has this GraphStage called InterLeave where upstreams are
cycled and N messages are pulled from each one. I'm wondering if we should
expose a policy related to fetch messages which is now round-robin.
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