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Date: Mon, 8 Dec 2014 10:42:39 +0000
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Subject: Re: Switching to Java 7
From: Steve Loughran <stevel@hortonworks.com>
To: "mapreduce-dev@hadoop.apache.org" <mapreduce-dev@hadoop.apache.org>
Cc: "hdfs-dev@hadoop.apache.org" <hdfs-dev@hadoop.apache.org>,
	"common-dev@hadoop.apache.org" <common-dev@hadoop.apache.org>,
	"yarn-dev@hadoop.apache.org" <yarn-dev@hadoop.apache.org>
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yes, bumped them up to

export MAVEN_OPTS="-Xmx3072m -XX:MaxPermSize=768m"
export ANT_OPTS=$MAVEN_OPTS

also extended test runs times.


On 8 December 2014 at 00:58, Ted Yu <yuzhihong@gmail.com> wrote:

> Looking at the test failures of
> https://builds.apache.org/job/Hadoop-Hdfs-trunk/1963/ which uses jdk 1.7:
>
> e.g.
>
> https://builds.apache.org/job/Hadoop-Hdfs-trunk/1963/testReport/junit/org.apache.hadoop.hdfs.server.namenode.snapshot/TestRenameWithSnapshots/testRenameFileAndDeleteSnapshot/
>
> java.lang.OutOfMemoryError: Java heap space
>         at sun.nio.ch.EPollArrayWrapper.<init>(EPollArrayWrapper.java:120)
>         at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:68)
>         at
> sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36)
>         at
> io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
>         at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)
>         at
> io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
>         at
> io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:64)
>
>
> Should more heap be given to the tests ?
>
>
> Cheers
>
>
> On Sun, Dec 7, 2014 at 2:09 PM, Steve Loughran <stevel@hortonworks.com>
> wrote:
>
> > 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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