hadoop1.2.1 datanode 由于权限无法启动 expected: rwxr-xr-x

/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG:   host = hdp122s1.test.com/192.168.56.101
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 1.2.1
STARTUP_MSG:   build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.2 -r 1503152; compiled by 'mattf' on Mon Jul 22 15:23:09 PDT 2013
STARTUP_MSG:   java = 1.7.0_80
************************************************************/
-- ::, INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
-- ::, INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
-- ::, INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at  second(s).
-- ::, INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system started
-- ::, INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi registered.
-- ::, WARN org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already exists!
-- ::, WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Invalid directory in dfs.data.dir: Incorrect permission for file:/home/hdp/hadoop/data, expected: rwxr-xr-x, while actual: rwxr----x
-- ::, ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: All directories in dfs.data.dir are invalid.
-- ::, INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Exiting Datanode
-- ::, INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:

设置满足条件的权限

chmod  /home/hdp/hadoop/data