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https://issues.apache.org/jira/browse/SOLR-13944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17057545#comment-17057545
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Munendra S N commented on SOLR-13944:
-------------------------------------
[~jbernste] [~tflobbe]
I have one quick question. Here, in the collator we are just computing hits and
so, should we consider postFilter like collapse here or just ignore it?
Essentially question is which hits to consider the without collapse one or
with collapse?
> CollapsingQParserPlugin throws NPE instead of bad request
> ---------------------------------------------------------
>
> Key: SOLR-13944
> URL: https://issues.apache.org/jira/browse/SOLR-13944
> Project: Solr
> Issue Type: Bug
> Affects Versions: 7.3.1
> Reporter: Stefan
> Assignee: Munendra S N
> Priority: Minor
> Attachments: SOLR-13944.patch, SOLR-13944.patch, SOLR-13944.patch,
> SOLR-13944.patch
>
>
> I noticed the following NPE:
> {code:java}
> java.lang.NullPointerException at
> org.apache.solr.search.CollapsingQParserPlugin$OrdFieldValueCollector.finish(CollapsingQParserPlugin.java:1021)
> at
> org.apache.solr.search.CollapsingQParserPlugin$OrdFieldValueCollector.finish(CollapsingQParserPlugin.java:1081)
> at
> org.apache.solr.search.SolrIndexSearcher.buildAndRunCollectorChain(SolrIndexSearcher.java:230)
> at
> org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:1602)
> at
> org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1419)
> at
> org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:584)
> {code}
> If I am correct, the problem was already addressed in SOLR-8807. The fix does
> was not working in this case though, because of a syntax error in the query
> (I used the local parameter syntax twice instead of combining it). The
> relevant part of the query is:
> {code:java}
> &fq={!tag=collapser}{!collapse field=productId sort='merchantOrder asc, price
> asc, id asc'}
> {code}
> After discussing that on the mailing list, I was asked to open a ticket,
> because this situation should result in a bad request instead of a
> NullpointerException (see
> [https://mail-archives.apache.org/mod_mbox/lucene-solr-user/201911.mbox/%3CCAMJgJxTuSb%3D8szO8bvHiAafJOs08O_NMB4pcaHOXME4Jj-GO2A%40mail.gmail.com%3E])
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