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Spark Streaming 结合FlumeNG使用实例

sunshine_junge 2014-12-25 20:37:12 发表于 实操演练 [显示全部楼层] 只看大图 回帖奖励 阅读模式 关闭右栏 4 18931
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问题导读：
1.flume-ng与spark如何结合？
2.spark streaming如何与多种数据源结合？









SparkStreaming是一个对实时数据流进行高通量、容错处理的流式处理系统，可以对多种数据源（如Kdfka、Flume、Twitter、Zero和TCP 套接字）进行类似map、reduce、join、window等复杂操作，并将结果保存到外部文件系统、数据库或应用到实时仪表盘。

2-1.png


Spark Streaming流式处理系统特点有：
  • 将流式计算分解成一系列短小的批处理作业
  • 将失败或者执行较慢的任务在其它节点上并行执行
  • 较强的容错能力(基于RDD继承关系Lineage)
  • 使用和RDD一样的语义

本文将Spark Streaming结合FlumeNG，然后以源码中的JavaFlumeEventCount作参考，建立maven工程，打包在spark standalone集群运行。


一、步骤

1.建立maven工程，写好pom.xml
需要spark streaming的flume插件包，jar的maven地址如下，填入pom.xml中
  1. 1 <dependency>

  2. 2     <groupId>org.apache.spark</groupId>

  3. 3     <artifactId>spark-streaming-flume_2.10</artifactId>

  4. 4     <version>1.1.0</version>

  5. 5 </dependency>
复制代码


完整的pom.xml
  1. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  2.     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  3.     <modelVersion>4.0.0</modelVersion>

  4.     <groupId>test</groupId>

  5.     <artifactId>hq</artifactId>

  6.     <version>0.0.1-SNAPSHOT</version>

  7.     <build>

  8.     <plugins>

  9.             <plugin>

  10.                 <groupId>org.apache.maven.plugins</groupId>

  11.                 <artifactId>maven-compiler-plugin</artifactId>

  12.                 <version>2.3.2</version>

  13.                 <configuration>

  14.                     <source>1.6</source>

  15.                     <target>1.6</target>

  16.                     <compilerVersion>1.6</compilerVersion>

  17.                     <encoding>UTF-8</encoding>

  18.                 </configuration>

  19.             </plugin>

  20.             <plugin>

  21.                 <groupId>org.apache.maven.plugins</groupId>

  22.                 <artifactId>maven-jar-plugin</artifactId>

  23.                 <version>2.3.2</version>

  24.                 <configuration>

  25.                     <archive>

  26.                         <manifest>

  27.                             <addClasspath>true</addClasspath>

  28.                             <classpathPrefix>.</classpathPrefix>

  29.                             <mainClass>JavaFlumeEventCount</mainClass>

  30.                         </manifest>

  31.                     </archive>

  32.                 </configuration>

  33.             </plugin>

  34.             <plugin>

  35.                 <groupId>org.apache.maven.plugins</groupId>

  36.                 <artifactId>maven-assembly-plugin</artifactId>

  37.                 <version>2.4</version>

  38.                 <configuration>

  39.                   <descriptorRefs>

  40.                     <descriptorRef>jar-with-dependencies</descriptorRef>

  41.                   </descriptorRefs>

  42.                 </configuration>

  43.             </plugin>

  44.         </plugins>

  45.     </build>

  46.     <dependencies>

  47.         <dependency>

  48.             <groupId>org.apache.spark</groupId>

  49.             <artifactId>spark-streaming-flume_2.10</artifactId>

  50.             <version>1.1.0</version>

  51.         </dependency>

  52.     </dependencies>

  53. </project>
复制代码



2.编码并且打包

JavaCode：


  1. import org.apache.spark.SparkConf;

  2. import org.apache.spark.api.java.function.Function;

  3. import org.apache.spark.streaming.*;

  4. import org.apache.spark.streaming.api.java.*;

  5. import org.apache.spark.streaming.flume.FlumeUtils;

  6. import org.apache.spark.streaming.flume.SparkFlumeEvent;

  7. 

  8. public final class JavaFlumeEventCount {

  9.     private JavaFlumeEventCount() {

  10.     }

  11. 

  12.     public static void main(String[] args) {

  13. 

  14.         String host = args[0];

  15.         int port = Integer.parseInt(args[1]);

  16. 

  17.         Duration batchInterval = new Duration(Integer.parseInt(args[2]));

  18.         SparkConf sparkConf = new SparkConf().setAppName("JavaFlumeEventCount");

  19.         JavaStreamingContext ssc = new JavaStreamingContext(sparkConf,

  20.                 batchInterval);

  21.         JavaReceiverInputDStream<SparkFlumeEvent> flumeStream = FlumeUtils

  22.                 .createStream(ssc, host, port);

  23. 

  24.         flumeStream.count();

  25. 

  26.         flumeStream.count().map(new Function<Long, String>() {

  27.             private static final long serialVersionUID = -572435064083746235L;

  28. 

  29.             public String call(Long in) {

  30.                 return "Received " + in + " flume events.";

  31.             }

  32.         }).print();

  33. 

  34.         ssc.start();

  35.         ssc.awaitTermination();

  36.     }

  37. }
复制代码


maven 命令：eclipse中run as -> Maven Assembly:assembly
得到工程的target目录下得到jar包：hq-0.0.1-SNAPSHOT.jar


3.将3个jar包上传到服务器，准备运行
除了自身打的jar包外，运行还需要：spark-streaming-flume_2.10-1.1.0.jar,flume-ng-sdk-1.4.0.jar 这2个jar包（我使用的flume-ng版本是1.4.0）
将3个jar包上传到服务器~/spark/test/目录下。


4.命令行提交任务，运行
[ebupt@eb174 test]$ spark-submit --master spark://eb174:7077 --name FlumeStreaming --class JavaFlumeEventCount --executor-memory 1G --total-executor-cores 2 --jars spark-streaming-flume_2.10-1.1.0.jar,flume-ng-sdk-1.4.0.jar hq.jar eb174 11000 5000
注意：参数解释：spark-submit --help。自己可以根据需要修改内存，防止OOM。另外jars可以同时加载多个jar包，逗号分隔。指定的运行类后需要指定3个参数。


5.开启flume-ng，启动数据源
书写好flume的agent配置文件spark-flumeng.conf，内容如下：
  1. 1 #Agent5

  2.  2 #List the sources, sinks and channels for the agent

  3.  3 agent5.sources =  source1

  4.  4 agent5.sinks =  hdfs01

  5.  5 agent5.channels = channel1

  6.  6 

  7.  7 #set channel for sources and sinks

  8.  8 agent5.sources.source1.channels = channel1

  9.  9 agent5.sinks.hdfs01.channel = channel1

  10. 10 

  11. 11 #properties of someone source

  12. 12 agent5.sources.source1.type = spooldir

  13. 13 agent5.sources.source1.spoolDir = /home/hadoop/huangq/spark-flumeng-data/

  14. 14 agent5.sources.source1.ignorePattern = .*(\\.index|\\.tmp|\\.xml)$

  15. 15 agent5.sources.source1.fileSuffix = .1

  16. 16 agent5.sources.source1.fileHeader = true

  17. 17 agent5.sources.source1.fileHeaderKey = filename

  18. 18 

  19. 19 # set interceptors

  20. 20 agent5.sources.source1.interceptors = i1 i2

  21. 21 agent5.sources.source1.interceptors.i1.type = org.apache.flume.interceptor.HostInterceptor$Builder

  22. 22 agent5.sources.source1.interceptors.i1.preserveExisting = false

  23. 23 agent5.sources.source1.interceptors.i1.hostHeader = hostname

  24. 24 agent5.sources.source1.interceptors.i1.useIP=false

  25. 25 agent5.sources.source1.interceptors.i2.type = org.apache.flume.interceptor.TimestampInterceptor$Builder

  26. 26 

  27. 27 #properties of mem-channel-1

  28. 28 agent5.channels.channel1.type = memory

  29. 29 agent5.channels.channel1.capacity = 100000

  30. 30 agent5.channels.channel1.transactionCapacity = 100000

  31. 31 agent5.channels.channel1.keep-alive = 30

  32. 32 

  33. 33 #properties of sink

  34. 34 agent5.sinks.hdfs01.type = avro

  35. 35 agent5.sinks.hdfs01.hostname = eb174

  36. 36 agent5.sinks.hdfs01.port = 11000
复制代码



启动flume-ng: [hadoop@eb170 flume]$ bin/flume-ng agent -n agent5 -c conf  -f conf/spark-flumeng.conf

注意：
①flume的sink要用avro，指定要发送到的spark集群中的一个节点，我们这里是eb174:11000。
②如果没有指定Flume的sdk包，会出现错误：　java.lang.NoClassDefFoundError: Lorg/apache/flume/source/avro/AvroFlumeEvent;没有找到类。这个类在flume的sdk包内，在jars参数中指定jar包位置就可以。
③将自己定义的运行jar包单独列出，不要放在jars参数指定，否则也会有错误抛出。


6.运行结果
在提交spark任务的客户端可以看到，看到大量的输出信息，然后可以看到有数据的RDD会统计出这个RDD有多少行，统计结果如下：
  1.  1 Spark assembly has been built with Hive, including Datanucleus jars on classpath 

  2.  2 Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties 

  3.  3 14/10/13 19:00:44 INFO SecurityManager: Changing view acls to: ebupt, 

  4.  4 14/10/13 19:00:44 INFO SecurityManager: Changing modify acls to: ebupt, 

  5.  5 14/10/13 19:00:44 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(ebupt, ); users with modify permissions: Set(ebupt, ) 

  6.  6 14/10/13 19:00:45 INFO Slf4jLogger: Slf4jLogger started 

  7.  7 14/10/13 19:00:45 INFO Remoting: Starting remoting 

  8.  8 14/10/13 19:00:45 INFO Remoting: Remoting started; listening on addresses :[akka.tcp://sparkDriver@eb174:51147] 

  9.  9 14/10/13 19:00:45 INFO Remoting: Remoting now listens on addresses: [akka.tcp://sparkDriver@eb174:51147] 

  10. 10 14/10/13 19:00:45 INFO Utils: Successfully started service 'sparkDriver' on port 51147. 

  11. 11 14/10/13 19:00:45 INFO SparkEnv: Registering MapOutputTracker 

  12. 12 14/10/13 19:00:45 INFO SparkEnv: Registering BlockManagerMaster

  13. 13 ....

  14. 14 .....

  15. 15 14/10/13 19:09:21 INFO DAGScheduler: Missing parents: List()

  16. 16 14/10/13 19:09:21 INFO DAGScheduler: Submitting Stage 145 (MappedRDD[291] at map at MappedDStream.scala:35), which has no missing parents

  17. 17 14/10/13 19:09:21 INFO MemoryStore: ensureFreeSpace(3400) called with curMem=13047, maxMem=278302556

  18. 18 14/10/13 19:09:21 INFO MemoryStore: Block broadcast_110 stored as values in memory (estimated size 3.3 KB, free 265.4 MB)

  19. 19 14/10/13 19:09:21 INFO MemoryStore: ensureFreeSpace(2020) called with curMem=16447, maxMem=278302556

  20. 20 14/10/13 19:09:21 INFO MemoryStore: Block broadcast_110_piece0 stored as bytes in memory (estimated size 2020.0 B, free 265.4 MB)

  21. 21 14/10/13 19:09:21 INFO BlockManagerInfo: Added broadcast_110_piece0 in memory on eb174:41187 (size: 2020.0 B, free: 265.4 MB)

  22. 22 14/10/13 19:09:21 INFO BlockManagerMaster: Updated info of block broadcast_110_piece0

  23. 23 14/10/13 19:09:21 INFO DAGScheduler: Submitting 1 missing tasks from Stage 145 (MappedRDD[291] at map at MappedDStream.scala:35)

  24. 24 14/10/13 19:09:21 INFO TaskSchedulerImpl: Adding task set 145.0 with 1 tasks

  25. 25 14/10/13 19:09:21 INFO TaskSetManager: Starting task 0.0 in stage 145.0 (TID 190, eb175, PROCESS_LOCAL, 1132 bytes)

  26. 26 14/10/13 19:09:21 INFO BlockManagerInfo: Added broadcast_110_piece0 in memory on eb175:57696 (size: 2020.0 B, free: 519.6 MB)

  27. 27 14/10/13 19:09:21 INFO TaskSetManager: Finished task 0.0 in stage 145.0 (TID 190) in 25 ms on eb175 (1/1)

  28. 28 14/10/13 19:09:21 INFO DAGScheduler: Stage 145 (take at DStream.scala:608) finished in 0.026 s

  29. 29 14/10/13 19:09:21 INFO TaskSchedulerImpl: Removed TaskSet 145.0, whose tasks have all completed, from pool 

  30. 30 14/10/13 19:09:21 INFO SparkContext: Job finished: take at DStream.scala:608, took 0.036589357 s

  31. 31 -------------------------------------------

  32. 32 Time: 1413198560000 ms

  33. 33 -------------------------------------------

  34. 34 Received 35300 flume events.

  35. 35 

  36. 36 14/10/13 19:09:55 INFO JobScheduler: Finished job streaming job 1413198595000 ms.0 from job set of time 1413198595000 ms 

  37. 37 14/10/13 19:09:55 INFO JobScheduler: Total delay: 0.126 s for time 1413198595000 ms (execution: 0.112 s) 

  38. 38 14/10/13 19:09:55 INFO MappedRDD: Removing RDD 339 from persistence list 

  39. 39 14/10/13 19:09:55 INFO BlockManager: Removing RDD 339 

  40. 40 14/10/13 19:09:55 INFO MappedRDD: Removing RDD 338 from persistence list 

  41. 41 14/10/13 19:09:55 INFO BlockManager: Removing RDD 338 

  42. 42 14/10/13 19:09:55 INFO MappedRDD: Removing RDD 337 from persistence list 

  43. 43 14/10/13 19:09:55 INFO BlockManager: Removing RDD 337 

  44. 44 14/10/13 19:09:55 INFO ShuffledRDD: Removing RDD 336 from persistence list 

  45. 45 14/10/13 19:09:55 INFO BlockManager: Removing RDD 336 

  46. 46 14/10/13 19:09:55 INFO UnionRDD: Removing RDD 335 from persistence list 

  47. 47 14/10/13 19:09:55 INFO BlockManager: Removing RDD 335 

  48. 48 14/10/13 19:09:55 INFO MappedRDD: Removing RDD 333 from persistence list 

  49. 49 14/10/13 19:09:55 INFO BlockManager: Removing RDD 333 

  50. 50 14/10/13 19:09:55 INFO BlockRDD: Removing RDD 332 from persistence list 

  51. 51 14/10/13 19:09:55 INFO BlockManager: Removing RDD 332 

  52. 52 ...

  53. 53 ...

  54. 54 14/10/13 19:10:00 INFO TaskSchedulerImpl: Adding task set 177.0 with 1 tasks 

  55. 55 14/10/13 19:10:00 INFO TaskSetManager: Starting task 0.0 in stage 177.0 (TID 215, eb175, PROCESS_LOCAL, 1132 bytes) 

  56. 56 14/10/13 19:10:00 INFO BlockManagerInfo: Added broadcast_134_piece0 in memory on eb175:57696 (size: 2021.0 B, free: 530.2 MB) 

  57. 57 14/10/13 19:10:00 INFO TaskSetManager: Finished task 0.0 in stage 177.0 (TID 215) in 24 ms on eb175 (1/1) 

  58. 58 14/10/13 19:10:00 INFO DAGScheduler: Stage 177 (take at DStream.scala:608) finished in 0.024 s 

  59. 59 14/10/13 19:10:00 INFO TaskSchedulerImpl: Removed TaskSet 177.0, whose tasks have all completed, from pool 

  60. 60 14/10/13 19:10:00 INFO SparkContext: Job finished: take at DStream.scala:608, took 0.033844743 s 

  61. 61 ------------------------------------------- 

  62. 62 Time: 1413198600000 ms 

  63. 63 ------------------------------------------- 

  64. 64 Received 0 flume events.
复制代码



二、结论

  • flume-ng与spark的结合成功，可根据需要灵活编写相关的类来实现实时处理FlumeNG传输的数据。
  • spark streaming和多种数据源结合，达到实时计算处理的能力。


三、参考资料




引用：http://www.cnblogs.com/byrhuangqiang/p/4022940.html

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pengsuyun 发表于 2014-12-26 08:41:34
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小南3707 发表于 2014-12-26 08:44:23
赞~                           
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hbu126 发表于 2014-12-26 09:57:25
thank you very much
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yinuo2016 发表于 2016-6-12 18:09:42
如果日志是一个个小文件，怎么确保flume读取小文件日志时，每个文件的内容是一个数据流？
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