[GitHub] spark pull request #16006: [SPARK-18580] [DStreams] [external/kafka-0-10] Us...

[koeninger <gi...@git.apache.org>]

Github user koeninger commented on a diff in the pull request:

    https://github.com/apache/spark/pull/16006#discussion_r105720383
  
    --- Diff: external/kafka-0-10/src/main/scala/org/apache/spark/streaming/kafka010/DirectKafkaInputDStream.scala ---
    @@ -143,9 +147,16 @@ private[spark] class DirectKafkaInputDStream[K, V](
     
             lagPerPartition.map { case (tp, lag) =>
               val maxRateLimitPerPartition = ppc.maxRatePerPartition(tp)
    -          val backpressureRate = Math.round(lag / totalLag.toFloat * rate)
    -          tp -> (if (maxRateLimitPerPartition > 0) {
    -            Math.min(backpressureRate, maxRateLimitPerPartition)} else backpressureRate)
    +          val effectiveRate = if (rate >= 0) rate else backpressureInitialRate
    --- End diff --
    
    This can be moved before the map, right?


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