hadoop教程培训课件

1、Hadoop-env.sh7Hadoop-env.sh7使到运行javac，jps8使到运行javac，jps899初学者因为不熟悉Java和Hadoop擎可以解决大量问题（技巧利用搜索import初学者因为不熟悉Java和Hadoop擎可以解决大量问题（技巧利用搜索importimport保险的办法是加载以及lib下所有的jar保险的办法是加载以及lib下所有的jar propertyname=build propertyname=buildlocation=buildpropertypathid=hadoop-filesetincludename=*/*.jarfilesetinclude

2、name=*/*.jar续 续/home/huang/apache-ant-编译/home/huang/apache-ant-编译publicclassemopublicclassemoicvoidmain(Stringargs)throwsConfigurationconf=newFileSystemfs=Pathfile=续if(fs.exists(file)else/Writingto ln(File续if(fs.exists(file)else/Writingto ln(File FSDataOutputStreamoutStream=/ReadingfromStringdata =指

3、南第3erface”一指南第3erface”一压缩工具参考压缩工具参考安装yum-yinstallgccgcc-c+autoconf安装yum-yinstallgccgcc-c+autoconf测试HDFSCAPI：一段C测试HDFSCAPI：一段C/Followingisalibhdfsleadaptedfromthesrc/c+/libhdfs/hdfs_write.c/Followingisalibhdfsleadaptedfromthesrc/c+/libhdfs/hdfs_write.coftheHadoopargc,char*argv)hdfsFS fs=if(!fs)f(stde

4、rr,Cannotconnecttochar*fileName=char*message=size= etoHDFSC续exists=hdfsExists(fs,if(exists-1)f(stdout,续exists=hdfsExists(fs,if(exists-1)f(stdout,File%sexists!n,/Createandopenfilefor hdfsFileoutFile=hdfsOpenFile(fs,fileName,O_WRONLY|O_CREAT,0,0,0); if (!outFile) f(stderr,Failedtoopen%sforwriting!n,/w

5、ritetohdfsCloseFile(fs, outFile);续/OpenfileforhdfsFileinFile=hdfsOpenFile(fs,fileName,续/OpenfileforhdfsFileinFile=hdfsOpenFile(fs,fileName,O_RDONLY,0,0,if(!inFile)f(stderr,Failedtoopen%sforreading!n,char*data=malloc(sizeof(char)*/Readfrom tSizereadSize=hdfsRead(fs,inFile,(void*)data,f(stdout,%sn, return-I $HADOOP_HOME/src/c+/libhdfs -I $HADOOP_HOME/src/c+/libhdfs -L $HADOOP_HOME/c+/Linux-amd64- -o- Dataguru（炼数成金）是专业数据分，提供教育，内容，社区，数据分析业务Dataguru（炼数成金）是专业数据分，提供教育，内容，社区，数据分析业务等服的课程采用新兴的互联网教育形式，独创地发展了逆费式网络培训课程模式。既继承传统教育重学习氛围，重竞争压力的特点，同时打破时空限制，把天