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Posted to common-user@hadoop.apache.org by Georgi Ivanov <iv...@vesseltracker.com> on 2014/11/17 12:02:59 UTC

CDH 4.7 upgrade java 6 to java 7

Hi,
I am planning to upgrade Java version to Java 7. I am using ubuntu server
Here is what I’m planning to do :

1. Stop all hadoop services in cloudera manager.
2. Update java version on all nodes (update-alternatives --set java 
/path/to/java).
3. Start all hadoop services in cloudera manager
4. Do i need to restart cloudera managet too ?

Is there any risk for my data on the cluster when i change the java 
version ?
Do you see something wrong with my steps above ?

Thanks
Georgi