我正在尝试以root用户身份运行hadoop,我执行了namenode格式命令hadoop namenode -format。之后我尝试打开hadoop守护进程,但是namenode没有启动。我运行命令hadoop namenode -importCheckpoint,它给了foll。错误:
14/09/15 01:25:55 INFO common.Storage: Storage directory /home/umaima/cloudera_namedir is not formatted.
14/09/15 01:25:55 INFO common.Storage: Formatting ...
14/09/15 01:25:55 ERROR namenode.FSNamesystem: FSNamesystem initialization failed.
java.io.IOException: NameNode is not formatted.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:336)
at org.apache.hadoop.hdfs.server.namenode.FSImage.doImportCheckpoint(FSImage.java:531)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:375)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:110)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:372)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:335)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:271)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:467)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1330)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1339)
14/09/15 01:25:55 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at umaima-Lenovo-IdeaPad-S510p/127.0.1.1
************************************************************/
我被困在这里。任何帮助都非常感谢。提前致谢
答案 0 :(得分:0)
在格式化namenode之前,删除tmp文件夹(包含datanode和namenode),然后格式化namenode。
然后启动hadoop服务。