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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12261) Surefire needs to make sure the JVMs it fires up are 64-bit
Date Thu, 23 Jul 2015 17:55:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14639263#comment-14639263
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Colin Patrick McCabe commented on HADOOP-12261:
-----------------------------------------------

On a 32-bit machine with a traditional 50/50 kernel/usermode split, 2 GB is the most any process
can have.  Are we comfortable cutting the surefire plugin memory reservation to that level?
 If not, I think it might be time to wave goodbye to 32-bit... I don't think anyone is really
running Hadoop on 32-bit.  Even ARM has gone 64-bit.

> Surefire needs to make sure the JVMs it fires up are 64-bit
> -----------------------------------------------------------
>
>                 Key: HADOOP-12261
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12261
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: test
>    Affects Versions: 2.7.1
>            Reporter: Alan Burlison
>            Assignee: Alan Burlison
>
> hadoop-project/pom.xml sets maven-surefire-plugin.argLine to include -Xmx4096m. Allocating
 that amount of memory requires a 64-bit JVM, but on platforms with both 32 and 64-bit JVMs
surefire runs the 32 bit version by default and tests fail to start as a result. "-d64" should
be added to the command-line arguments to ensure a 64-bit JVM is always used.



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