017_查看Hadoop 日志以及日志的格式

root@redhat5 bin]# pwd
/gaozhen/hadoop-1.2.1/bin
[root@redhat5 bin]# cd ..
[root@redhat5 hadoop-1.2.1]# ls
bin                      hadoop-examples-1.2.1.jar     logs
build.xml                hadoop-minicluster-1.2.1.jar  NOTICE.txt
c++                      hadoop-test-1.2.1.jar         README.txt
CHANGES.txt              hadoop-tools-1.2.1.jar        sbin
conf                     ivy                           share
contrib                  ivy.xml                       src
hadoop-ant-1.2.1.jar     lib                           webapps
hadoop-client-1.2.1.jar  libexec
hadoop-core-1.2.1.jar    LICENSE.txt
[root@redhat5 hadoop-1.2.1]# cd logs
[root@redhat5 logs]# ls
hadoop-root-datanode-redhat5.log
hadoop-root-datanode-redhat5.out
hadoop-root-jobtracker-redhat5.log
hadoop-root-jobtracker-redhat5.out
hadoop-root-namenode-redhat5.log
hadoop-root-namenode-redhat5.out
hadoop-root-secondarynamenode-redhat5.log
hadoop-root-secondarynamenode-redhat5.out
hadoop-root-tasktracker-redhat5.log
hadoop-root-tasktracker-redhat5.out
history
userlogs