HDFS基准测试

HDFS基准测试

a 测试写入速度

向HDFS文件系统中写入数据，10个文件，每个文件10MB，文件存到、/benchmarks/TestDFSIO中

hadoop jar /opt/software/hadoop-2.7.5/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.5.jar TestDFSIO -write -nrFiles 10 -fileSize 10MB

结果显示在当前目录中

b 测试读取速度

hadoop jar /opt/software/hadoop-2.7.5/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.5.jar TestDFSIO -read -nrFiles 10 -fileSize 10MB

c 清除测试数据

hadoop jar /opt/software/hadoop-2.7.5/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.5.jar TestDFSIO -clean