RFR: 8304885: Reuse stale data to improve DNS resolver resiliency [v7]

[Daniel Fuchs]

On Wed, 10 May 2023 22:08:20 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> I have update the text about "property is not set" case, but leave the text about "default value" as implementation-specific, similarly to what we have in the text about "networkaddress.cache.ttl" property, and this allow to change this value in some situations.
>
> Right now the negative value is ignored, and is not mentioned in the new spec, But it could be used to cover "always use the stale data on error" case. So we can change this in the future, but probably it will not be a big deal to update the spec if that will happen.

I believe we do need to specify what happens if the value is negative. We cannot leave that as "undefined behaviour that may change in the future".

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PR Review Comment: https://git.openjdk.org/jdk/pull/13285#discussion_r1196583182