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Posted to issues@lucene.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2019/12/08 04:30:00 UTC
[jira] [Commented] (SOLR-13877) NPE in ExpandComponent
[ https://issues.apache.org/jira/browse/SOLR-13877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16990712#comment-16990712 ]
ASF subversion and git services commented on SOLR-13877:
--------------------------------------------------------
Commit 8e9876f516b5e45e2f62b2ea87bcb65075f74fd3 in lucene-solr's branch refs/heads/master from Michael Gibney
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=8e9876f ]
SOLR-7798: robust support for expand when used w/o collapsing (#325)
There are applications of ExpandComponent that intentionally do not
involve prior collapsing of results on the expand field, which can lead
to an NPE in expand component when expand.field (for matched docs) has
fewer unique values than the number of matched docs.
This commit refines the approach taken in SOLR-13877, which addressed
the same underlying issue.
> 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
> Assignee: Munendra S N
> Priority: Major
> Labels: collapse, expand
> Fix For: 8.4
>
> Attachments: SOLR-13877.patch
>
>
> 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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