关于Hadoop [root@master ~]# hadoop --help Usage: hadoop [--config confdir] COMMANDwhere COMMAND is one of: fs run a generic filesystem user client version print the version jar <jar> run a jar file checknative [-a|-h] check native hadoop and compressi
Hadoop Datanode节点无法启动(All directories in dfs.data.dir are invalid) java.io.IOException: All directories in dfs.datanode.data.dir are invalid: "/usr/local/hadoop-2.4.0/dfs/data" at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocat