jvm fatal error when I kill my namenode after upgrade

[YouPeng Yang <yy...@gmail.com>]

Hi users

    I'm do the upgrade testing in my test enviroments.
    HA is enabled,and after upgrading  the active namenode and the
datanode, It can not to  stop the upgraded namenode
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[hadoop@hadoop2 sbin]$ ./hadoop-daemons.sh stop datanode
hadoop2: stopping datanode
hadoop3: stopping datanode
hadoop1: stopping datanode
[hadoop@hadoop2 sbin]$ ./hadoop-daemons.sh --hosts hadoop2  stop namenode
cat: /home/hadoop/hadoop-2.2.0/etc/hadoop/215201: No such file or directory
[hadoop@hadoop2 sbin]$ ./hadoop-daemon.sh stop namenode
no namenode to stop
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   So that I have to kill the pid  which is :

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hadoop   21198 21153  2 09:43 pts/6    00:00:11
/home/hadoop/jdk1.6.0_45/bin/java -Dproc_namenode -Xmx1000m
-Djava.net.preferIPv4Stack=true
-Dhadoop.log.dir=/home/hadoop/hadoop-2.2.0/logs
-Dhadoop.log.file=hadoop.log -Dhadoop.home.dir=/home/hadoop/hadoop-2.2.0
-Dhadoop.id.str=hadoop -Dhadoop.root.logger=INFO,console
-Djava.library.path=/home/hadoop/hadoop-2.2.0/lib/native
-Dhadoop.policy.file=hadoop-policy.xml -Djava.net.preferIPv4Stack=true
-Dhadoop.security.logger=INFO,RFAS -Dhdfs.audit.logger=INFO,NullAppender
-Dhadoop.security.logger=INFO,NullAppender
org.apache.hadoop.hdfs.server.namenode.NameNode -upgrade .
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 Unfortunately it comes up the fatal error. The attached file is the detail
information