GitHub user s1monw opened a pull request:
https://github.com/apache/lucene-solr/pull/522
LUCENE-8599: Use sparse bitset to store docs in
SingleValueDocValuesFieldUpdates
Using a sparse bitset in SingleValueDocValuesFieldUdpates allows storing
which documents have an update much more efficient and prevents the need
to sort the docs array altogether that showed to be a significant bottleneck
in LUCENE-8598. Using the spares bitset yields another 10x performance
improvement
in applying updates versus the changes proposed in LUCENE-8598.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/s1monw/lucene-solr use_sparse_bitset
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/lucene-solr/pull/522.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #522
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commit 71dce85ccbd074b2afb580bd9e066e986daa989a
Author: Simon Willnauer <simonw@...>
Date: 2018-12-10T14:31:43Z
LUCENE-8599: Use sparse bitset to store docs in
SingleValueDocValuesFieldUpdates
Using a sparse bitset in SingleValueDocValuesFieldUdpates allows storing
which documents have an update much more efficient and prevents the need
to sort the docs array altogether that showed to be a significant bottleneck
in LUCENE-8598. Using the spares bitset yields another 10x performance
improvement
in applying updates versus the changes proposed in LUCENE-8598.
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