1.测试工具
hadoop自带的TestDFSIO
2.命令
(1)写
sudo -u hdfs hadoop jar hadoop-test-2.6.0-mr1-cdh5.14.0.jar TestDFSIO -write -nrFiles 2 -fileSize 512 -bufferSize 1000000 -resFile /tmp/TestDFSIOresults.txt
(2)读
sudo -u hdfs hadoop jar hadoop-test-2.6.0-mr1-cdh5.14.0.jar TestDFSIO -read -nrFiles 2 -fileSize 512 -bufferSize 1000000 -resFile /tmp/TestDFSIOresults.txt
(3)清除
sudo -u hdfs hadoop jar hadoop-test-2.6.0-mr1-cdh5.14.0.jar TestDFSIO -clean
3找到你的hadoop的jars
cd /opt/cloudera/parcels/CDH/jars/
ls | grep hadoop-test
jar包所在目录下执行读写清空命令
进行测试