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https://issues.apache.org/jira/browse/ACCUMULO-2781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13991086#comment-13991086
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Christopher Tubbs commented on ACCUMULO-2781:
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This issue relates to ACCUMULO-2774, because if a minimum heap size is set in
the surefire plugin's configuration, it will affect every JVM launched. This is
particularly a problem if forkCount is ever set to something greater than 1.
However, it may also affect things, even with forkCount=1, depending on the
OS's ability to manage resources with forked processes. Ensuring that forked
JVMs are reused (even when there is only one fork), ensures we reserve the
minimum heap necessary to run the tests as few times as needed.
> Unit tests should reuse forks by default
> ----------------------------------------
>
> Key: ACCUMULO-2781
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2781
> Project: Accumulo
> Issue Type: Bug
> Components: build
> Affects Versions: 1.6.0
> Reporter: Christopher Tubbs
> Fix For: 1.6.1, 1.7.0
>
>
> The default value for maven-surefire-plugin's reuseForks is true. This is set
> to false in our pom.xml in order to keep ITs independent. This inadvertently
> affects unit tests also, and causes unit tests to create a new JVM for each
> test class.
> These should be separated, and the default for unit tests
> (maven-surefire-plugin's execution) should be {{reuseForks=true}}, and the
> default for ITs (maven-failsafe-plugin's execution) should be
> {{reuseForks=false}} (as it is now).
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