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https://issues.apache.org/jira/browse/HADOOP-12261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14642848#comment-14642848
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Alan Burlison commented on HADOOP-12261:
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I've just reduced the heap down to 2Gb which should work in either case.
In any case it's largely moot at the moment anyway as I've been unable to get
*any* successful test runs at all, even on Linux. Seems to me that the
non-repeatibility of the Hadoop test suite is a much larger concern.
> Surefire needs to make sure the JVMs it fires up fit within the memory
> available
> --------------------------------------------------------------------------------
>
> 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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