[jdk17u-dev] RFR: 8284389: Improve stability of GHA Pre-submit testing by caching cygwin installer

[Christoph Langer]

On Fri, 8 Apr 2022 06:51:14 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

> What is the problem with the Pre-submit tests?

I think this should be clear by the bug description. But in short words here: We recently saw issues when the GHA job downloaded the cygwin installer. curl timed out for whatever reason. The intent is to mitigate this a bit by caching the installer. With some luck we could find it in the cache. And, furthermore, errors like this should only bubble up in the build step but never in the test step now. (We had tests where the build could download the cygwin installer but a bit later the test step failed.)

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PR: https://git.openjdk.java.net/jdk17u-dev/pull/341