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https://issues.apache.org/jira/browse/COMPRESS-485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16842031#comment-16842031
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Michael Osipov commented on COMPRESS-485:
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So you simply track the futures in an ordered collection and at some point
later you collect them. Looks reasonable to me.
> Reproducible Builds: keep entries order when gathering ScatterZipOutputStream
> content in ParallelScatterZipCreator
> ------------------------------------------------------------------------------------------------------------------
>
> Key: COMPRESS-485
> URL: https://issues.apache.org/jira/browse/COMPRESS-485
> Project: Commons Compress
> Issue Type: Improvement
> Components: Archivers
> Affects Versions: 1.18
> Reporter: Hervé Boutemy
> Priority: Major
> Time Spent: 2h
> Remaining Estimate: 0h
>
> currently, zip files created using ParallelScatterZipCreator have random
> order.
> This is causing issues when trying to do Reproducible Builds with Maven
> MNG-6276
> Studying ParallelScatterZipCreator, entries are kept sorted in memory in
> futures list: instead of writing each full scatter in sequence, iterating
> over futures should permit to write each zip entry in original order, without
> changing the API or any performance of the gathering process
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