RFR: 8292381: java/net/httpclient/SpecialHeadersTest.java fails with "ERROR: Shutting down connection: HTTP/2 client stopped"

[Jaikiran Pai]

On Wed, 17 Aug 2022 17:06:12 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

> Please find here a change that improves SpecialHeadersTest. This test creates a large amount of ephemeral clients and has been observed running out of heap space in our CI once. This change updates the test to wait for the previous HttpClient to be eligible for garbage collection before it creates a new one. It also verifies that no outstanding operation are still running on the client by the time the client is released.

Overall, I understand these changes but I'm still a bit surprised with the way this test failed on the CI system especially after how we try to stop/close the relevant resources (like the SelectorManager thread) as soon as we realize the client is no longer used and doesn't have any pending operations.

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PR: https://git.openjdk.org/jdk/pull/9908