Github user liyintang commented on the pull request:
https://github.com/apache/spark/pull/11921#issuecomment-200960606
@koeninger:
here is the min code example to reproduce this issue:
<
// Create context
val ssc = new StreamingContext(sparkConf, Seconds(intervalSeconds))
// Create topic, kafkaParams, messageHandler and offsetnRanges
val topicsSet: Set[String] = "flog".split(",").toSet
val kafkaParams = Map[String, String]("metadata.broker.list" ->
KafkaCluster.MAIN.getKafkaConnString)
val messageHandler = (mmd: MessageAndMetadata[String, String]) =>
mmd
val topicPartitionOffsetRange = KafkaOffsetsUtil.getKafkaOffsets(
KafkaCluster.MAIN,
topicsSet.toList.asJava,
kafka.api.OffsetRequest.LatestTime).toMap.mapValues(Long2long).take(10)
// Create a DStream
val inputStream = KafkaUtils.createDirectStream[String, String,
StringDecoder, StringDecoder, MessageAndMetadata[String, String]](
ssc,
kafkaParams,
topicPartitionOffsetRange,
messageHandler)
// Apply window function with simple count
inputStream.window(Seconds(slidingWindowInterval),
Seconds(intervalSeconds)).foreachRDD(rdd => rdd.count())
ssc.start()
ssc.awaitTermination()
>
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