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https://issues.apache.org/jira/browse/SOLR-7787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14629892#comment-14629892
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Dawid Weiss commented on SOLR-7787:
-----------------------------------
Yeah, I honestly don't think those storage optimizations are worth the effort
either, but I think the code can be tweaked after it's integrated -- I wouldn't
want to tinker with it in this patch (can you file another issue)?
> Fork HyperLogLog and remove fastutil dependency
> -----------------------------------------------
>
> Key: SOLR-7787
> URL: https://issues.apache.org/jira/browse/SOLR-7787
> Project: Solr
> Issue Type: Task
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Trivial
> Fix For: 5.3, Trunk
>
> Attachments: SOLR-7787.patch
>
>
> So fastutil is now part of Solr's distribution (because the stats component
> uses hyperloglog library, which in turn requires fastutil). I looked at the
> actual uses of fastutil and only java-hll uses it (and only a few classes).
> I've created a fork that uses HPPC instead (also randomized all tests, they
> pass). Since it's a relatively simple package I think it could be forked and
> imported into Solr's codebase entirely. I'd make a pull request but I see
> Hoss also created a few comments/ PRs and none of them received any
> attention; the project seems to be stale or dead?
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