RFR: 8288979: Improve CLDRConverter run time [v2]

[Naoto Sato]

On Wed, 22 Jun 2022 17:27:11 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> True. Which raises the question: do we need any arbitrary order? The original code used a hashmap too. It preserved the original order only when no duplicates were detected.
>
> A stable order is useful when comparing between builds (by a human). 
> It also supports the goal of reproducible builds.
> @naotoj  What do you think?

IIUC, once this fix makes it to the repository, the build will be reproducible. Making it to be sorted is a welcome enhancement (I compare the generated bundles manually from time to time), but it may be costly so it could defy the performance improvement?

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PR: https://git.openjdk.org/jdk/pull/9243