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hadoop datanode启动失败(All directories in dfs.data.dir are invalid)_all directories in dfs.datanode.data is invalid

all directories in dfs.datanode.data is invalid

由于hadoop节点的磁盘满了,导致节点死掉,今天对其进行扩容。首先,将原节点的数据拷贝到目标节点下,从而避免数据的丢失,但是在执行hadoop_daemon.sh start datanode后没有启动datanode,查看log如下:

2014-04-17 11:44:06,200 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Invalid directory in dfs.data.dir: Incorrect permission for /hadoop_data/hadoop/hdfs/data/hadoop-hadoop, expected: rwxr-xr-x, while actual: rwxrwxr-x
2014-04-17 11:44:06,200 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: All directories in dfs.data.dir are invalid.
2014-04-17 11:44:06,201 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Exiting Datanode
2014-04-17 11:44:06,202 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: 
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