Viraj Jasani created HADOOP-17858:
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Summary: 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
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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