RFR: 8267666: Add option to jcmd GC.heap_dump to use existing file [v3]

[Christoph Langer]

On Wed, 2 Jun 2021 20:49:10 GMT, Anton Kozlov <akozlov at openjdk.org> wrote:

> SInce JDK-8263066 suggests more enhancements, it may be worth keeping it to track the remaining ones.

No, the issue we're trying to solve with JDK-8263066 is basically the same as with JDK-8267666, so we'll close it. There's also JDK-8200579 which could be closed then.

> @AlanBateman The patch does not do anything special to the named pipe use-case, although makes it possible. Do you suggest removing mentions of the use-case from the CSR? Otherwise, what concerns could I address?

I would suggest to change the CSR to use "overwrite" but other than that, it seems fine. Let's wait what Alan has to say but that would be my thinking.

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PR: https://git.openjdk.java.net/jdk/pull/4183