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https://issues.apache.org/jira/browse/LUCENE-8857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876227#comment-16876227
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Munendra S N commented on LUCENE-8857:
--------------------------------------
I'm working on SOLR-13404, after this merge som tests started failing. Just to
be sure I tested in the latest master(without my changes), I was able to
reproduce the failure
{code:java}
ant test -Dtestcase=TestDistributedGrouping -Dtests.method=test
-Dtests.seed=B5D95BEAE23E9468 -Dtests.slow=true -Dtests.badapples=true
-Dtests.locale=nl-AW -Dtests.timezone=Asia/Jayapura -Dtests.asserts=true
-Dtests.file.encoding=UTF-8
{code}
This is where it fails due to assertion Error
{code:java}
https://github.com/apache/lucene-solr/blob/e70b43c39a2070a72a50a3b47ab3b9d485cdd044/solr/core/src/test/org/apache/solr/TestDistributedGrouping.java#L329
{code}
{code:java}
https://github.com/apache/lucene-solr/blob/e70b43c39a2070a72a50a3b47ab3b9d485cdd044/lucene/core/src/java/org/apache/lucene/search/TopDocs.java#L79
{code}
> Refactor TopDocs#Merge To Take In Custom Tie Breakers
> -----------------------------------------------------
>
> Key: LUCENE-8857
> URL: https://issues.apache.org/jira/browse/LUCENE-8857
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Atri Sharma
> Priority: Major
> Fix For: master (9.0)
>
> Attachments: LUCENE-8857.patch, LUCENE-8857.patch, LUCENE-8857.patch,
> LUCENE-8857.patch, LUCENE-8857.patch
>
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> In LUCENE-8829, the idea of having lambdas passed in to the API to allow
> finer control over the process was discussed.
> This JIRA tracks adding a parameter to the API which allows passing in
> lambdas to define custom tie breakers, thus allowing users to do custom
> algorithms when required.
> CC: [~jpountz] [~simonw]
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