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https://issues.apache.org/jira/browse/LUCENE-7521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15691118#comment-15691118
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Toke Eskildsen commented on LUCENE-7521:
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Just to be clear, I was only talking about the bit structures optimal-packed
vs. word-aligned. Whether or not the performance/complexity trade-off is good
enough for keeping the Direct*- and Packed*ThreeBlocks-implementations (which
are both optimal-packed and word-aligned by nature) is harder to judge from the
old performance tests: They differ a lot more across CPU architectures.
> Simplify PackedInts
> -------------------
>
> Key: LUCENE-7521
> URL: https://issues.apache.org/jira/browse/LUCENE-7521
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-7521.patch
>
>
> We have a lot of specialization in PackedInts about how to keep packed arrays
> of longs in memory. However, most use-cases have slowly moved to DirectWriter
> and DirectMonotonicWriter and most specializations we have are barely used
> for performance-sensitive operations, so I'd like to clean this up a bit.
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