[jira] [Created] (SOLR-13877) NPE in ExpandComponent

["Munendra S N (Jira)" <ji...@apache.org>]

Munendra S N created SOLR-13877:
-----------------------------------

             Summary: NPE in ExpandComponent
                 Key: SOLR-13877
                 URL: https://issues.apache.org/jira/browse/SOLR-13877
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Munendra S N


Truncated Stack trace
{code:java}
Caused by: java.lang.NullPointerException
	at org.apache.lucene.util.BytesRef.compareTo(BytesRef.java:162)
	at org.apache.lucene.util.BytesRef.compareTo(BytesRef.java:36)
	at java.base/java.util.Comparators$NaturalOrderComparator.compare(Comparators.java:52)
	at java.base/java.util.Comparators$NaturalOrderComparator.compare(Comparators.java:47)
	at org.apache.lucene.util.ArrayTimSorter.compare(ArrayTimSorter.java:48)
	at org.apache.lucene.util.TimSorter.nextRun(TimSorter.java:109)
	at org.apache.lucene.util.TimSorter.sort(TimSorter.java:201)
	at org.apache.lucene.util.ArrayUtil.timSort(ArrayUtil.java:452)
	at org.apache.lucene.util.ArrayUtil.timSort(ArrayUtil.java:471)
	at org.apache.lucene.util.ArrayUtil.timSort(ArrayUtil.java:479)
	at org.apache.lucene.search.TermInSetQuery.<init>(TermInSetQuery.java:85)
	at org.apache.lucene.search.TermInSetQuery.<init>(TermInSetQuery.java:107)
	at org.apache.solr.handler.component.ExpandComponent.getGroupQuery(ExpandComponent.java:746)
	at org.apache.solr.handler.component.ExpandComponent.process(ExpandComponent.java:330)
	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:328)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:198)
	at org.apache.solr.core.SolrCore.execute(SolrCore.java:2583)
	at org.apache.solr.util.TestHarness.query(TestHarness.java:339)
	at org.apache.solr.util.TestHarness.query(TestHarness.java:321)
	at org.apache.solr.SolrTestCaseJ4.assertQ(SolrTestCaseJ4.java:972)
{code}
This could happen when expand component is used without collapse and docs returned have fewer unique values



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