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Date: Sun, 7 Dec 2014 22:09:24 +0000
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Subject: Re: Switching to Java 7
From: Steve Loughran <stevel@hortonworks.com>
To: "common-dev@hadoop.apache.org" <common-dev@hadoop.apache.org>
Cc: "hdfs-dev@hadoop.apache.org" <hdfs-dev@hadoop.apache.org>,
	"mapreduce-dev@hadoop.apache.org" <mapreduce-dev@hadoop.apache.org>,
	"yarn-dev@hadoop.apache.org" <yarn-dev@hadoop.apache.org>
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The latest migration status:

  if the jenkins builds are happy then the patch will go in -I do that
monday morning 10:00 UTC

https://builds.apache.org/view/H-L/view/Hadoop/

Getting jenkins to work has been "surprisingly difficult"...it turns out
that those builds which we thought were java7 or java8 weren't, as setting
  export JAVA_HOME=${TOOLS_HOME}/java/latest

meant that they picked up a java 6 machine

Now the trunk precommit/postcommit and scheduled branches should have
export JAVA_HOME=${TOOLS_HOME}/java/jdk1.7.0_55

the Java 8 builds have more changes

export JAVA_HOME=${TOOLS_HOME}/java/jdk1.8.0
export MAVEN_OPTS="-Xmx3072m -XX:MaxPermSize=768m"
and  -Dmaven.javadoc.skip=true  on the mvn builds

without these javadocs fails and test runs OOM.

We need to have something resembling the nightly build env setup again,
git/Svn stored file with something for java8 alongside the normal env vars.

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