Guillaume Nodet created SSHD-739:
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Summary: A call to resolvePropertyValue can be very inefficient
Key: SSHD-739
URL: https://issues.apache.org/jira/browse/SSHD-739
Project: MINA SSHD
Issue Type: Bug
Reporter: Guillaume Nodet
Each time a property is retrieved, all system properties names are iterated.
This is because {{PropertyResolverUtil#resolvePropertyValue}} is calling
{{GenericUtils.isEmpty(props)}} on a {{SyspropsMapWrapper}}.
This can be solved by using {{isNull(props)}} instead of {{isEmpty(props)}} as
there's no need to check if the map is empty.
In the same call, there's also a call to {{System.getProperty}} which seems to
be redundant with the {{SyspropsMapWrapper}}. I think it should be removed.
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