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https://issues.apache.org/jira/browse/SOLR-7036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378733#comment-15378733
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Jamie Swain commented on SOLR-7036:
-----------------------------------
[~mdvir1] that just won't apply for some reason.
I wget this file:
{code}wget
https://issues.apache.org/jira/secure/attachment/12817769/SOLR-7036.patch{code}
Then try to apply the patch, according to
https://wiki.apache.org/solr/HowToContribute
{code}
tuna:lucene-solr ((f9c9470...) $%)$ patch -p1 -i SOLR-7036.patch --dry-run
patching file solr/core/src/java/org/apache/solr/request/SimpleFacets.java
Hunk #2 FAILED at 444.
Hunk #3 FAILED at 497.
Hunk #4 FAILED at 533.
Hunk #5 FAILED at 577.
4 out of 5 hunks FAILED -- saving rejects to file
solr/core/src/java/org/apache/solr/request/SimpleFacets.java.rej
patching file solr/core/src/java/org/apache/solr/search/facet/FacetField.java
patching file solr/core/src/java/org/apache/solr/search/facet/FacetRequest.java
patching file
solr/core/src/java/org/apache/solr/search/facet/UnInvertedField.java
Hunk #5 FAILED at 178.
Hunk #6 FAILED at 408.
2 out of 7 hunks FAILED -- saving rejects to file
solr/core/src/java/org/apache/solr/search/facet/UnInvertedField.java.rej
patching file
solr/core/src/java/org/apache/solr/search/facet/UninvertedFieldOrdsOnly.java
patching file solr/core/src/test/org/apache/solr/TestGroupingSearch.java
patching file solr/core/src/test/org/apache/solr/request/SimpleFacetsTest.java
Hunk #1 FAILED at 372.
Hunk #2 FAILED at 418.
Hunk #3 FAILED at 438.
Hunk #4 FAILED at 460.
4 out of 4 hunks FAILED -- saving rejects to file
solr/core/src/test/org/apache/solr/request/SimpleFacetsTest.java.rej
patching file solr/solrj/src/java/org/apache/solr/common/params/FacetParams.java
tuna:lucene-solr ((f9c9470...) $%)$
{code}
I'm happy to help in any way I can. Would like like to send me a dropbox link
to a zip of your lucene-solr source directory? I can get an applyable patch
ready and send it back to you to post here?
> Faster method for group.facet
> -----------------------------
>
> Key: SOLR-7036
> URL: https://issues.apache.org/jira/browse/SOLR-7036
> Project: Solr
> Issue Type: Improvement
> Components: faceting
> Affects Versions: 4.10.3
> Reporter: Jim Musil
> Assignee: Erick Erickson
> Fix For: 5.5, 6.0
>
> Attachments: SOLR-7036.patch, SOLR-7036.patch, SOLR-7036.patch,
> SOLR-7036.patch, performance.txt
>
>
> This is a patch that speeds up the performance of requests made with
> group.facet=true. The original code that collects and counts unique facet
> values for each group does not use the same improved field cache methods that
> have been added for normal faceting in recent versions.
> Specifically, this approach leverages the UninvertedField class which
> provides a much faster way to look up docs that contain a term. I've also
> added a simple grouping map so that when a term is found for a doc, it can
> quickly look up the group to which it belongs.
> Group faceting was very slow for our data set and when the number of docs or
> terms was high, the latency spiked to multiple second requests. This solution
> provides better overall performance -- from an average of 54ms to 32ms. It
> also dropped our slowest performing queries way down -- from 6012ms to 991ms.
> I also added a few tests.
> I added an additional parameter so that you can choose to use this method or
> the original. Add group.facet.method=fc to use the improved method or
> group.facet.method=original which is the default if not specified.
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