Apache flume twitter代理不流数据

我正在尝试将Twitter提要流式传输到hdfs,然后使用配置单元.但第一部分,流数据和加载到hdfs不起作用,并给出Null指针异常.

这就是我尝试过的.

1.下载了apache-flume-1.4.0-bin.tar.提取它.将所有内容复制到/ usr/lib/flume /.在/ usr/lib/i中将所有者更改为flume目录的用户.当我做LS命令在/ usr/lib中/水槽/,它表明

bin  CHANGELOG  conf  DEVNOTES  docs  lib  LICENSE  logs  NOTICE  README  RELEASE-NOTES  tools

2.移至conf /目录.我将文件复制flume-env.sh.template为flume-env.sh并将JAVA_HOME编辑为我的java路径/usr/lib/jvm/java-7-oracle.

3.接下来,我在同一目录中创建了一个名为flume.conf的文件,conf并添加了以下内容

TwitterAgent.sources = Twitter
TwitterAgent.channels = MemChannel
TwitterAgent.sinks = HDFS

TwitterAgent.sources.Twitter.type = com.cloudera.flume.source.TwitterSource
TwitterAgent.sources.Twitter.channels = MemChannel
TwitterAgent.sources.Twitter.consumerKey = 
TwitterAgent.sources.Twitter.consumerSecret = 
TwitterAgent.sources.Twitter.accessToken = 
TwitterAgent.sources.Twitter.accessTokenSecret = 
TwitterAgent.sources.Twitter.keywords = hadoop, big data, analytics, bigdata, couldera, data science, data scientist, business intelligence, mapreduce, datawarehouse, data ware housing, mahout, hbase, nosql, newsql, businessintelligence, cloudcomputing

TwitterAgent.sinks.HDFS.channel = MemChannel
TwitterAgent.sinks.HDFS.type = hdfs
TwitterAgent.sinks.HDFS.hdfs.path = hdfs://localhost:8020/user/flume/tweets/%Y/%m/%d/%H/
TwitterAgent.sinks.HDFS.hdfs.fileType = DataStream
TwitterAgent.sinks.HDFS.hdfs.writeFormat = Text
TwitterAgent.sinks.HDFS.hdfs.batchSize = 1000
TwitterAgent.sinks.HDFS.hdfs.rollSize = 0
TwitterAgent.sinks.HDFS.hdfs.rollCount = 600

TwitterAgent.channels.MemChannel.type = memory
TwitterAgent.channels.MemChannel.capacity = 10000
TwitterAgent.channels.MemChannel.transactionCapacity = 100

我在twitter上创建了一个应用程序.生成令牌并将所有键添加到上面的文件中.API密钥我添加为消费者密钥.

我从这里提到的cloudera -files下载了flume -sources jar .

4.我将flume-sources-1.0-SNAPSHOT.jar添加到/ user/lib/flume/lib.

5.启动Hadoop并完成以下操作

hadoop fs -mkdir /user/flume/tweets
hadoop fs -chown -R flume:flume /user/flume
hadoop fs -chmod -R 770 /user/flume

6.我在/ user/lib/flume中运行以下命令

/usr/lib/flume/conf$ bin/flume-ng agent -n TwitterAgent -c conf -f conf/flume-conf

它显示它正在显示然后退出的JAR.

当我检查hdfs时,没有文件.hadoop fs -ls /user/flume/tweets它什么都没有显示出来.

在hadoop中,core-site.xml 文件具有以下配置

    
        fs.default.name
        hdfs://localhost:8020
        true
    

谢谢