Github user holdenk commented on a diff in the pull request:
https://github.com/apache/spark/pull/10089#discussion_r47278574
--- Diff:
external/kafka/src/test/scala/org/apache/spark/streaming/kafka/DirectKafkaStreamSuite.scala
---
@@ -364,8 +365,8 @@ class DirectKafkaStreamSuite
val batchIntervalMilliseconds = 100
val estimator = new ConstantEstimator(100)
- val messageKeys = (1 to 200).map(_.toString)
- val messages = messageKeys.map((_, 1)).toMap
+ val messages = Map("foo" -> 200)
+ kafkaTestUtils.sendMessages(topic, messages)
--- End diff --
While I haven't done much work with Kafka, it seems like we could maybe
explicitly specify the partitioner for producer in the producerConfiguration to
be round robin if we wanted to (although that requires some custom code from
what I can tell) or rotating the partition key.
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