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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12261) Surefire needs to make sure the JVMs it fires up are 64-bit
Date Sat, 25 Jul 2015 03:16:06 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14641368#comment-14641368
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Allen Wittenauer commented on HADOOP-12261:
-------------------------------------------

bq. I  disagree that the PMC is "completely untrustworthy" for occasionally allowing incompatible
changes in branch-2.

Yes, you're right.  I should be totally forgiving of the data loss, broken jobs, lost functionality,
and angry end users caused by these occasional (34 in branch-2 since 2.3.0, including the
9 in 2.8.0 already) actually-marked-as-incompatible changes.  (Who knows how many more have
slipped through the cracks).

bq.  let's try to keep this discussion constructive and focused on the issue at hand.

Fine.  It won't matter anyway.  PMC members always use the "we broke JDK6 so now we can do
anything" excuse for every incompatible change, so we'll drop 32-bit in 2.8.0 regardless of
the end user impact.

> 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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