第一天,配置hadoop,伪分布式,出现错误
按照教程:输入
bin/hadoop fs -get output output
结果出现如下错误:
ipc.Client: Retrying connect to server: localhost/127.0.0.1:9000. Already tried 0 time(s).
cat logs/hadoop-[用户名]-namenode-[机器名].log
2012-03-13 20:12:57,764 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /tmp/hadoop-somo/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:386)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:360)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:276)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:496)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1279)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1288)
上面错误显示,文件状态不一致,存储目录或者不可访问,
创建目录权限可写,然后执行如下语句
bin/hadoop namenode -fromat
仍然结果不对;明天期待解决
第二天解决的(下一遍文章摘要)
2012-03-13 20:12:57,764 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
原因是没有fomat namenode 执行如下命令
- bin/hadoop namenode -format
在这之前需要检查:是否有hadoop进程没有关闭
检查是否有hadoop运行
运行结果
输入
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