重新启动hadoop失败 webapps/hdfs not found in CLASSPATH

Question

最近需要在16节点配置hbase
环境：hadoop2.6+zookeeper3.4.6+hbase0.98.9 ubuntu12.04 server 64bit jdk 1.8.0_11
hadoop 配置的1个namenode和15个datanode zookeeper配置的3台 hbase一个Hmaster15个HRegion
开始时配置没问题，在hbase上跑东西也没问题
需要改变节点数量，所以关闭hbase，然后关闭zookeeper，最后关闭hadoop集群
不过我没有format那个hadoop的namenode
然后我就遇到hadoop的namenode起不起来的问题
请问有没有人对这个问题有研究啊？
我看hdfs的启动日志写的是： java.io.FileNotFoundException: webapps/hdfs not found in CLASSPATH
在网上也没看到类似问题和解决方案
怀疑是hbase集群关闭时是不是需要format 或者配置文件哪里不对 我查了关于classpath的hadoop配置文件，只有一个Yarn-site.xml的yarn.application.classpath那个我是注释掉的，应该也不是这个问题的吧
尝试重新format过namenode节点，重启还是不行 尝试过重新把hadoop删掉重新配置，不行 尝试改hdfs的启动脚本，在运行时手动export加上webapps/hdfs文件夹，不行
请问各位有没有解决办法啊？或者这个问题的大致思路？

启动日志如下：${HADOOP_HOME}//ogs/hadoop-ubuntu-namenode-m1.log

2015-02-01 22:45:43,870 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = m1/172.18.9.100
STARTUP_MSG: args = []
STARTUP_MSG: version = 2.2.0
STARTUP_MSG: classpath = /home/ubuntu/hadoop/hadoop-2.6.0/etc/hadoop:/home/ubuntu/hadoop/hadoop-2.6.0/share/hadoop/common/lib/asm-3$
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common -r 1529768; compiled by 'hortonmu' on 2013-10-07T06:28Z
STARTUP_MSG: java = 1.8.0_11
************************************************************/
2015-02-01 22:45:43,887 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
2015-02-01 22:45:44,515 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2015-02-01 22:45:44,670 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2015-02-01 22:45:44,671 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system started
2015-02-01 22:45:50,066 INFO org.mortbay.log: Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4j$
2015-02-01 22:45:50,069 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping NameNode metrics system...
2015-02-01 22:45:50,070 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system stopped.
2015-02-01 22:45:50,070 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system shutdown complete.
2015-02-01 22:45:50,071 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception in namenode join
**java.io.FileNotFoundException: webapps/hdfs not found in CLASSPATH
**** at org.apache.hadoop.http.HttpServer.getWebAppsPath(HttpServer.java:585)
at org.apache.hadoop.http.HttpServer.(HttpServer.java:251)
at org.apache.hadoop.http.HttpServer.(HttpServer.java:174)
at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer$1.(NameNodeHttpServer.java:76)
at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer.start(NameNodeHttpServer.java:74)
at org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:626)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:488)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:684)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:669)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1254)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1320)
2015-02-01 22:45:50,075 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
2015-02-01 22:45:50,078 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at m1/172.18.9.100
************************************************************/