Updates to Administration guide
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Isabela Sobral March 23, 2015 at 6:07 PM
PR 673
John Jackson November 21, 2014 at 5:46 PM
As PR 639 has not been pulled into develop yet, I'll manually move this to develop in another PR.
Gary Helmling November 13, 2014 at 10:07 PM
b) We require Oracle JDK and not Open JDK. Hadoop doesn't quite work well with open JDK
This used to be true of Hadoop, but according to http://wiki.apache.org/hadoop/HadoopJavaVersions this is no longer true of OpenJDK 1.7 and Hadoop 2.2+. I don't think we officially want to support OpenJDK 1.7 without testing CDAP on it, but I don't think we can disqualify it on the basis of Hadoop support. Maybe we can simply say CDAP isn't tested with it.
John Jackson November 13, 2014 at 5:25 PMEdited
This would go in
http://docs.cask.co/cdap/2.5.2/en/admin-manual/installation/installation.html#software-prerequisites
command to check java version:
java -version
There's a list of versions at http://wiki.apache.org/hadoop/HadoopJavaVersions : should we link to this, or amend these instructions accordingly?
We could suggest this as a source for checking for additional details on specific operating system and Java version combinations.
In the Installation -> Software pre-requisties -> Java Runtime section, the following information needs to be added.
a) We support JDK 1.6 and 1.7.
b) We require Oracle JDK and not Open JDK. Hadoop doesn't quite work well with open JDK
c) Command to check java version