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https://issues.apache.org/jira/browse/LUCENE-7396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15399689#comment-15399689
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Michael McCandless commented on LUCENE-7396:
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bq. Michael McCandless I'm curious what this separate speedup is about?
It was this change:
https://github.com/mikemccand/luceneserver/commit/e69c560d1e22f7b7e03b9ff88fd1d6f6d0079fdc
Previously luceneserver was always building facets, but I fixed it to skip that
if there are no facet fields since it's a somewhat expensive no-op in that case.
> Speed up flush of points
> ------------------------
>
> Key: LUCENE-7396
> URL: https://issues.apache.org/jira/browse/LUCENE-7396
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: master (7.0), 6.2
>
> Attachments: LUCENE-7396.patch, LUCENE-7396.patch, LUCENE-7396.patch,
> LUCENE-7396.patch
>
>
> 1D points already have an optimized merge implementation which works when
> points come in order. So maybe we could make IndexWriter's PointValuesWriter
> sort before feeding the PointsFormat and somehow propagate the information to
> the PointsFormat?
> The benefit is that flushing could directly stream points to disk with little
> memory usage.
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