我有一个使用Kafka+SparkStreaming的流应用程序。我从一个分区，一个消费者实例，三个经纪人开始。 我想按顺序做两件事：
1）在运行时向主题添加新分区，我使用它：
bin/kafka-topics.sh --zookeeper 192.168.101.164:2181 --alter --topic topic10 --partitions 2
2）通过运行相同的消费者代码作为单独的流程，将新的消费者实例添加到特定的消费者群体。
但是，在执行1时：我没有看到（仅）消费者实例使用新添加的分区。它只消耗动物园管理员最初自动分配的分区。
执行2：a）新实例自动分配一个分区topic10-1，该分区成功发生，但b）第一个实例在重新平衡后重新加入，但在以下情况下失败并出现以下错误
17/06/07 16:47:02 INFO ConsumerCoordinator: Revoking previously assigned partitions [topic10-0] for group SparkConsumerGrp
17/06/07 16:47:02 INFO AbstractCoordinator: (Re-)joining group SparkConsumerGrp
17/06/07 16:47:02 INFO AbstractCoordinator: Successfully joined group SparkConsumerGrp with generation 17
17/06/07 16:47:02 INFO ConsumerCoordinator: Setting newly assigned partitions [topic10-0] for group SparkConsumerGrp
17/06/07 16:47:02 ERROR JobScheduler: Error generating jobs for time 1496879222000 ms
java.lang.IllegalStateException: No current assignment for partition topic10-1
at org.apache.kafka.clients.consumer.internals.SubscriptionState.assignedState(SubscriptionState.java:264)
at org.apache.kafka.clients.consumer.internals.SubscriptionState.needOffsetReset(SubscriptionState.java:336)
at org.apache.kafka.clients.consumer.KafkaConsumer.seekToEnd(KafkaConsumer.java:1236)
at org.apache.spark.streaming.kafka010.DirectKafkaInputDStream.latestOffsets(DirectKafkaInputDStream.scala:197)
at org.apache.spark.streaming.kafka010.DirectKafkaInputDStream.compute(DirectKafkaInputDStream.scala:214)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1$$anonfun$apply$7.apply(DStream.scala:341)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1$$anonfun$apply$7.apply(DStream.scala:341)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1.apply(DStream.scala:340)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1.apply(DStream.scala:340)
at org.apache.spark.streaming.dstream.DStream.createRDDWithLocalProperties(DStream.scala:415)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1.apply(DStream.scala:335)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1.apply(DStream.scala:333)
at scala.Option.orElse(Option.scala:289)
at org.apache.spark.streaming.dstream.DStream.getOrCompute(DStream.scala:330)
at org.apache.spark.streaming.dstream.MappedDStream.compute(MappedDStream.scala:36)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1$$anonfun$apply$7.apply(DStream.scala:341)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1$$anonfun$apply$7.apply(DStream.scala:341)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1.apply(DStream.scala:340)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1.apply(DStream.scala:340)
at org.apache.spark.streaming.dstream.DStream.createRDDWithLocalProperties(DStream.scala:415)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1.apply(DStream.scala:335)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1.apply(DStream.scala:333)
at scala.Option.orElse(Option.scala:289)
at org.apache.spark.streaming.dstream.DStream.getOrCompute(DStream.scala:330)
at org.apache.spark.streaming.dstream.DStream$$anonfun$slice$2$$anonfun$apply$29.apply(DStream.scala:900)
at org.apache.spark.streaming.dstream.DStream$$anonfun$slice$2$$anonfun$apply$29.apply(DStream.scala:899)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at scala.collection.Iterator$class.foreach(Iterator.scala:893)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:241)
at scala.collection.AbstractTraversable.flatMap(Traversable.scala:104)
at org.apache.spark.streaming.dstream.DStream$$anonfun$slice$2.apply(DStream.scala:899)
at org.apache.spark.streaming.dstream.DStream$$anonfun$slice$2.apply(DStream.scala:877)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)
at org.apache.spark.SparkContext.withScope(SparkContext.scala:701)
at org.apache.spark.streaming.StreamingContext.withScope(StreamingContext.scala:264)
at org.apache.spark.streaming.dstream.DStream.slice(DStream.scala:877)
at org.apache.spark.streaming.dstream.DStream$$anonfun$slice$1.apply(DStream.scala:871)
at org.apache.spark.streaming.dstream.DStream$$anonfun$slice$1.apply(DStream.scala:871)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)
at org.apache.spark.SparkContext.withScope(SparkContext.scala:701)
at org.apache.spark.streaming.StreamingContext.withScope(StreamingContext.scala:264)
at org.apache.spark.streaming.dstream.DStream.slice(DStream.scala:870)
at org.apache.spark.streaming.dstream.WindowedDStream.compute(WindowedDStream.scala:65)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1$$anonfun$apply$7.apply(DStream.scala:341)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1$$anonfun$apply$7.apply(DStream.scala:341)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1.apply(DStream.scala:340)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1$$anonfun$1.apply(DStream.scala:340)
at org.apache.spark.streaming.dstream.DStream.createRDDWithLocalProperties(DStream.scala:415)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1.apply(DStream.scala:335)
at org.apache.spark.streaming.dstream.DStream$$anonfun$getOrCompute$1.apply(DStream.scala:333)
at scala.Option.orElse(Option.scala:289)
at org.apache.spark.streaming.dstream.DStream.getOrCompute(DStream.scala:330)
at org.apache.spark.streaming.dstream.ForEachDStream.generateJob(ForEachDStream.scala:48)
at org.apache.spark.streaming.DStreamGraph$$anonfun$1.apply(DStreamGraph.scala:117)
at org.apache.spark.streaming.DStreamGraph$$anonfun$1.apply(DStreamGraph.scala:116)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:241)
at scala.collection.AbstractTraversable.flatMap(Traversable.scala:104)
at org.apache.spark.streaming.DStreamGraph.generateJobs(DStreamGraph.scala:116)
at org.apache.spark.streaming.scheduler.JobGenerator$$anonfun$3.apply(JobGenerator.scala:249)
at org.apache.spark.streaming.scheduler.JobGenerator$$anonfun$3.apply(JobGenerator.scala:247)
at scala.util.Try$.apply(Try.scala:192)
at org.apache.spark.streaming.scheduler.JobGenerator.generateJobs(JobGenerator.scala:247)
at org.apache.spark.streaming.scheduler.JobGenerator.org$apache$spark$streaming$scheduler$JobGenerator$$processEvent(JobGenerator.scala:183)
at org.apache.spark.streaming.scheduler.JobGenerator$$anon$1.onReceive(JobGenerator.scala:89)
at org.apache.spark.streaming.scheduler.JobGenerator$$anon$1.onReceive(JobGenerator.scala:88)
at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)
我注意到新实例成功加入组的时间与第一个实例每次失败的时间完全匹配。
我正在使用Kafka version 0.10.0, Kafka-client version 0.10.0.1, spark-streaming-kafka-0-10_2.11 version 2.1.1。
最后，这是消费者代码：
SparkConf sparkConf = new SparkConf().setMaster("local[5]").setAppName("SparkConsumer1").set("spark.driver.host", "localhost");
JavaSparkContext sc = new JavaSparkContext(sparkConf);
// Create a StreamingContext with a 1 second batch size
JavaStreamingContext jssc = new JavaStreamingContext(sc, Durations.seconds(15));
List<String> topicSet = Arrays.asList(topics.split(","));
Map<String, Object> kafkaParams = new HashMap<>();
kafkaParams.put("bootstrap.servers", brokers);
kafkaParams.put("auto.offset.reset", "latest");
kafkaParams.put("group.id", "SparkConsumerGrp3");
kafkaParams.put("key.deserializer", StringDeserializer.class);
kafkaParams.put("value.deserializer", StringDeserializer.class);
kafkaParams.put("zookeeper.connect", "192.168.101.164:2181");
kafkaParams.put("enable.auto.commit", "true");
kafkaParams.put("auto.commit.interval.ms", "1000");
kafkaParams.put("session.timeout.ms","30000");
final JavaInputDStream<ConsumerRecord<String, String>> messages =
KafkaUtils.createDirectStream(
jssc,
LocationStrategies.PreferBrokers(),
ConsumerStrategies.<String, String>Subscribe(topicSet, kafkaParams)
);
我也发现了类似的here，但没有真正的答案。我真的很感激任何帮助。感谢。
更新
1）我能够让消费者从新添加的分区中获取数据。我们可以使用默认情况下设置为metadata.max.age.ms的{{1}}来配置我们希望刷新元数据的频率。