刚在虚拟机安装的hadoop启动后，执行hadoop命令总是很慢 在Linux虚拟机上配置Hadoop，在初始化时显示权限不够
\u865a\u62df\u673a\u4e0ahadoop\u5df2\u7ecf\u5f00\u542f\u4f46\u662f\u6709\u7684hdfs\u547d\u4ee4\u4e0d\u80fd\u6267\u884c\u5173\u95edHadoop\u7684\u5b89\u5168\u6a21\u5f0f\uff0c
$bin/hadoop dfsadmin -safemode leave
\u8981\u6ce8\u610f\u4f7f\u7528\u5bf9\u5e94\u7528\u6237\u521b\u5efa\u89e3\u538b\u6587\u4ef6\u3002\u5e76\u968f\u65f6\u4f7f\u7528ll \u2013a \u67e5\u770b\u6587\u4ef6\u6743\u9650\u3002
[root@master hadoop-1.0.3]# chmod 777 logs/*
[root@master hadoop-1.0.3]# chmod 777 logs
[root@master hadoop-1.0.3]# chown root logs/*
[root@master hadoop-1.0.3]# chown root logs
[root@master hadoop-1.0.3]# bin/start-all.sh
\u5f04\u4e86\u8fd9\u4e4b\u540e\u53d1\u73b0\u4f9d\u7136namenode\u6253\u4e0d\u5f00\uff0c\u6211\u5c31\u683c\u5f0f\u5316\u4e86namenode\uff1ahadoopnamenode \u2013format,\u53d1\u73b0\u91cc\u9762\u539f\u6765\u6709\u629b\u51fa\u4f8b\u5916\uff1a
ERRORnamenode.NameNode: java.io.IOException: Cannot create directory
/var/hadoop/hadoop-hadoop/dfs/name/current at org.apache.hadoop.hdfs.server.common.Storage$
StorageDirectory.clearDirectory(Storage.java:297)
atorg.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1320)
at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:1339)
at.org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1164)
at.org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1271)
atorg.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1288)
\u6839\u636e\u5217\u5916\u662f\u4e0d\u80fd\u521b\u5efa\u4e00\u4e2a\u76ee\u5f55\uff0c\u6709\u4e86\u4e0a\u9762\u7684\u7ecf\u9a8c\u6211\u5c31\u77e5\u9053\u4e86\u662f\u6ca1\u6709\u5efa\u76ee\u5f55\u7684\u6743\u9650\u3002\u6240\u4ee5\u6211\u76f4\u63a5\u5c31\u5728/var/\u4e0b\u5efa\u4e86\u4e00\u4e2a\u76ee\u5f55\u53eb\u505ahadoop/\uff0c\u5e76\u6388\u4e88\u4e86\u6743\u9650\u3002\u518d\u683c\u5f0f\u5316namenode\uff0c\u6210\u529f\u542f\u52a8\u3002\u4f46\u662f\u8f6c\u5230\u5b50\u8282\u70b9\u4e0a\u8f93\u5165jps\u67e5\u770b,\u53d1\u73b0\u5e76\u6ca1\u6709\u5b8c\u5168\u542f\u52a8\u3002\u77e5\u9053node\u4e5f\u6709\u540c\u6837\u95ee\u9898\u3002
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