RFR: 8314021: HeapDump: Optimize segmented heap file merging phase [v2]

[Yi Yang]

On Mon, 18 Sep 2023 11:09:36 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

> Apologies for delay, had looked at this previously but not come back for final review.

Never mind:) Thanks @alexmenkov and @kevinjwalls for the reviews.

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PR Comment: https://git.openjdk.org/jdk/pull/15245#issuecomment-1724721509