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https://issues.apache.org/jira/browse/YARN-2707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gera Shegalov updated YARN-2707:
--------------------------------
Attachment: YARN-2707.v01.patch
Thanks for reporting this bug, [~yuzhih...@gmail.com]. It turns out that there
is a test for this but it was not checking Future.get. Future.isDone returns
true for failed Callables as well.
> Potential null dereference in FSDownload
> ----------------------------------------
>
> Key: YARN-2707
> URL: https://issues.apache.org/jira/browse/YARN-2707
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: Gera Shegalov
> Priority: Minor
> Attachments: YARN-2707.v01.patch
>
>
> Here is related code in call():
> {code}
> Pattern pattern = null;
> String p = resource.getPattern();
> if (p != null) {
> pattern = Pattern.compile(p);
> }
> unpack(new File(dTmp.toUri()), new File(dFinal.toUri()), pattern);
> {code}
> In unpack():
> {code}
> RunJar.unJar(localrsrc, dst, pattern);
> {code}
> unJar() would dereference the pattern without checking whether it is null.
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