hadoop1.1.2格式化出错：*is in an inconsistent state: storage directory does not exist or is not accessible

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配置好hadoop的各项文件后，执行
$ hadoop namenode –format报错
查询日志发现错误如下：
21:08:48,103 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered FSNamesystemStateMBean and NameNodeMXBean 21:08:48,125 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Caching file names occuring more than 10 times 21:08:48,129 INFO org.apache.hadoop.hdfs.server.common.Storage: Storage directory /tmp/hadoop-sylar/dfs/name does not exist. 21:08:48,130 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed. org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /tmp/hadoop-sylar/dfs/name is in an inconsistent state: storage directory does not exist or is not accessible. at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:288) at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:97) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:384) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:358) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:276) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:497) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1268) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1277)
是由于/hadoop文件没有创建并且也没有读写权限导致的。
解决办法：

$ sudo mkdir /hadoop$ sudo chown hbase:hbase /hadoop$ chmod -R a+w /hadoop

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