Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/7796#discussion_r35962873
--- Diff:
external/kafka/src/main/scala/org/apache/spark/streaming/kafka/DirectKafkaInputDStream.scala
---
@@ -73,12 +73,19 @@ class DirectKafkaInputDStream[
protected val kc = new KafkaCluster(kafkaParams)
- protected val maxMessagesPerPartition: Option[Long] = {
- val ratePerSec = context.sparkContext.getConf.getInt(
+ private val ratePerSec: Int = context.sparkContext.getConf.getInt(
"spark.streaming.kafka.maxRatePerPartition", 0)
- if (ratePerSec > 0) {
+ protected def maxMessagesPerPartition: Option[Long] = {
+ val estimatedRate =
rateController.map(_.getLatestRate().toInt).getOrElse(-1)
+ val numPartitions = currentOffsets.keys.size
+ val effectiveRatePerSec = if (estimatedRate > 0) {
+ (ratePerSec min (estimatedRate / numPartitions))
--- End diff --
Again, we dont use the postfix notation.
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