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https://jira.codehaus.org/browse/SUREFIRE-906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=306442#comment-306442
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Kristian Rosenvold commented on SUREFIRE-906:
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Interesting how the "flush" method on FileOutputStream does nothign....
> Sometimes get NullPointerException in forked process
> ----------------------------------------------------
>
> Key: SUREFIRE-906
> URL: https://jira.codehaus.org/browse/SUREFIRE-906
> Project: Maven Surefire
> Issue Type: Bug
> Components: process forking
> Affects Versions: 2.13.0
> Environment: Arch linux
> Reporter: Christopher Mosher
>
> (This is using the latest 2.13-SNAPSHOT)
> Using forkMode=perthread, the child processes sometimes abort with this
> exception:
> java.lang.NullPointerException
> at java.io.File.<init>(File.java:251)
> at
> org.apache.maven.surefire.booter.BooterDeserializer.deserialize(BooterDeserializer.java:61)
> at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:63)
> It only happens sometimes.
> Using -X keeps the temp files, and looking at the file that's supposed to
> pass the properties, I see that the file is truncated midway, causing the
> exception.
> Possibly the parent process needs to *flush* the file after it writes to it
> before is closes it.
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