zookeeper-env.sh issue when setting up HBase

Followed CDH4.2.2 installation guide to setup HBase.

Ran "service zookeeper-server start"

No error from command line.  But zookeeper.log says "nohup: failed to run command ‘java’: No such file or directory".

Interesting!  Java home is right by doing "echo $JAVA_HOME".

After about one hour troubleshooting and script checking, it turned out:

zookeeper-env.sh is needed under /etc/zookeeper/conf directory (as other Hadoop component).  But for somehow, zookeeper installer did not have such file by default.

I have to manually create such file and put following line into it:

export JAVA_HOME=/opt/jdk1.6.0_45/

After that, starting zookeeper works.  I can see it from 'jps':

[root@centos conf]# jps
2732 TaskTracker
4964 Jps
4776 QuorumPeerMain
3133 NameNode
2548 JobTracker
2922 DataNode