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https://issues.apache.org/jira/browse/HADOOP-7964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183623#comment-13183623
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Daryn Sharp commented on HADOOP-7964:
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bq. Add {{@VisibleForTesting}} to {{SecurityUtil#useIpForTokenService}} and
{{SecurityUtil#hostResolver}}
Sure, good idea.
bq. Consider just adding accessor for {{useIpForTokenService}}.
{{useIpForTokenService}} is only intended to ever be used in one place by
{{SecurityUtil#buildTokenService()}}. I thought it'd be faster to directly
access the class member but I'll add an accessor if you like.
bq. We should perhaps post a patch for 205 also and get it in in a subsequent
1.x release.
Theoretically the patch should apply since the trunk code came from 205, but
I'll double check.
> Deadlock in class init.
> -----------------------
>
> Key: HADOOP-7964
> URL: https://issues.apache.org/jira/browse/HADOOP-7964
> Project: Hadoop Common
> Issue Type: Bug
> Components: security, util
> Affects Versions: 0.20.205.0, 0.24.0, 0.23.1, 1.0.0, 1.1.0
> Reporter: Kihwal Lee
> Assignee: Daryn Sharp
> Priority: Blocker
> Attachments: HADOOP-7964.patch
>
>
> After HADOOP-7808, client-side commands hang occasionally. There are cyclic
> dependencies in NetUtils and SecurityUtil class initialization. Upon initial
> look at the stack trace, two threads deadlock when they hit the either of
> class init the same time.
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