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https://issues.apache.org/jira/browse/HADOOP-17858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Masatake Iwasaki updated HADOOP-17858:
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Fix Version/s: 3.2.3
(was: 3.2.4)
> Avoid possible class loading deadlock with VerifierNone initialization
> ----------------------------------------------------------------------
>
> Key: HADOOP-17858
> URL: https://issues.apache.org/jira/browse/HADOOP-17858
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0, 3.2.3, 3.3.2
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Superclass Verifier has a static initializer VERIFIER_NONE that initializes
> sub-class VerifierNone. This reference can result in deadlock during class
> loading as per
> [https://docs.oracle.com/javase/specs/jls/se8/html/jls-12.html#jls-12.4.2].
> As of today, only RpcProgram use this instance and hence it is safe but if
> more clients start using this (specifically static ones), it has potential to
> bring deadlock. We should break this referencing before it is late.
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