试试这个代码
[mw_shl_code=scala,true]/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// scalastyle:off println
package org.apache.spark.examples.streaming
import org.apache.spark.SparkConf
import org.apache.spark.streaming._
import org.apache.spark.streaming.flume._
import org.apache.spark.util.IntParam
/**
* Produces a count of events received from Flume.
*
* This should be used in conjunction with the Spark Sink running in a Flume agent. See
* the Spark Streaming programming guide for more details.
*
* Usage: FlumePollingEventCount <host> <port>
* `host` is the host on which the Spark Sink is running.
* `port` is the port at which the Spark Sink is listening.
*
* To run this example:
* `$ bin/run-example org.apache.spark.examples.streaming.FlumePollingEventCount [host] [port] `
*/
object FlumePollingEventCount {
def main(args: Array[String]) {
if (args.length < 2) {
System.err.println(
"Usage: FlumePollingEventCount <host> <port>")
System.exit(1)
}
StreamingExamples.setStreamingLogLevels()
val Array(host, IntParam(port)) = args
val batchInterval = Milliseconds(2000)
// Create the context and set the batch size
val sparkConf = new SparkConf().setAppName("FlumePollingEventCount")
val ssc = new StreamingContext(sparkConf, batchInterval)
// Create a flume stream that polls the Spark Sink running in a Flume agent
val stream = FlumeUtils.createPollingStream(ssc, host, port)
// Print out the count of events received from this server in each batch
stream.count().map(cnt => "Received " + cnt + " flume events." ).print()
ssc.start()
ssc.awaitTermination()
}
}
// scalastyle:on println[/mw_shl_code]
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