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Hadoop集群搭建时的问题及解决
[日期：2012-01-17] 来源：Linux社区 作者：dperseus [字体：]
日志为：
2010-12-10 21:54:22,555 INFO org.apache.Hadoop.ipc.Server: IPC Server handler 1 on 9000, call delete(/home/hadoop/hadoop/tmp/mapred/system, true) from 192.168.1.228:54680: error: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete /home/hadoop/hadoop/tmp/mapred/system. Name node is in safe mode.
The reported blocks 3 has reached the threshold 0.9990 of total blocks 3. Safe mode will be turned off automatically in 29 seconds.
org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete /home/hadoop/hadoop/tmp/mapred/system. Name node is in safe mode.
The reported blocks 3 has reached the threshold 0.9990 of total blocks 3. Safe mode will be turned off automatically in 29 seconds.
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.deleteInternal(FSNamesystem.java:1804)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.delete(FSNamesystem.java:1780)
at org.apache.hadoop.hdfs.server.namenode.NameNode.delete(NameNode.java21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:342)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1350)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1346)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:742)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1344)
Fedora 15 部署Hadoop 0.21 全分布式模式 1namenode 2datanode
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