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test put file to hdfs error - MapReduce - [mail # user]
...hello, I write a test code to put local file to hdfs,but it report error on line 66. give me some advices. thanks.  env: hadoop 1.0.4,centos 5.5,java: [zhouhh@Hadoop48 hadoop-1.0.4]$ ec...
   Author: 周梦想, 2013-01-17, 06:02
Re: Can I switch the IP/host of NN without losing the filesystem? - MapReduce - [mail # user]
...Hi Jianhui,  If you only has hadoop and not HBase, maybe there is no problem. Last time we changed IP addresses but not hostname. Our hadoop version is hadoop 1.0.2, HBase is 0.92. &nbs...
   Author: 周梦想, 2013-01-06, 08:15
Re: name node can't startup - MapReduce - [mail # user]
...the log is: 2012-12-17 17:09:05,646 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: java.lang.NullPointerException         at org.apache.hadoop.hdfs.server.namenod...
   Author: 周梦想, 2012-12-17, 18:16
name node can't startup - MapReduce - [mail # user]
...hello,  I encountered a problem of hadoop 1.02. At begining, the second name node exited and can't start,it reports error like below:  2012-12-17 17:09:05,646 ERROR org.apache.hado...
   Author: 周梦想, 2012-12-17, 09:51
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