Stefan created SOLR-13944:
-----------------------------
Summary: CollapsingQParserPlugin throws NPE instead of bad request
Key: SOLR-13944
URL: https://issues.apache.org/jira/browse/SOLR-13944
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Affects Versions: 7.3.1
Reporter: Stefan
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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