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Posted to dev@lucene.apache.org by "Markus Jelsma (JIRA)" <ji...@apache.org> on 2018/10/11 14:50:00 UTC
[jira] [Created] (SOLR-12852) NPE in ClusteringComponent
Markus Jelsma created SOLR-12852:
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Summary: NPE in ClusteringComponent
Key: SOLR-12852
URL: https://issues.apache.org/jira/browse/SOLR-12852
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: contrib - Clustering
Affects Versions: 7.5
Reporter: Markus Jelsma
Fix For: master (8.0)
Got this exception:
{code}
o.a.s.s.HttpSolrCall null:java.lang.NullPointerException
at org.apache.solr.handler.clustering.ClusteringComponent.process(ClusteringComponent.java:234)
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:298)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2541)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:709)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:515)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:377)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:323)
{code}
with this config (copied from reference guide)
{code}
<searchComponent name="clustering" class="solr.clustering.ClusteringComponent">
<!-- Lingo clustering algorithm -->
<lst name="engine">
<str name="name">lingo</str>
<str name="carrot.algorithm">org.carrot2.clustering.lingo.LingoClusteringAlgorithm</str>
</lst>
<!-- An example definition for the STC clustering algorithm. -->
<lst name="engine">
<str name="name">stc</str>
<str name="carrot.algorithm">org.carrot2.clustering.stc.STCClusteringAlgorithm</str>
</lst>
</searchComponent>
<requestHandler name="/clustering"
class="solr.SearchHandler">
<lst name="defaults">
<bool name="clustering">true</bool>
<bool name="clustering.results">true</bool>
<!-- Logical field to physical field mapping. -->
<str name="carrot.url">id</str>
<str name="carrot.title">doctitle</str>
<str name="carrot.snippet">content</str>
<!-- Configure any other request handler parameters. We will cluster the
top 100 search results so bump up the 'rows' parameter. -->
<str name="rows">100</str>
<str name="fl">*,score</str>
</lst>
<!-- Append clustering at the end of the list of search components. -->
<arr name="last-components">
<str>clustering</str>
</arr>
</requestHandler>
{code}
using this query:
http://localhost:8983/solr/collection/clustering?q=*:*
All libraries are present, Solr no longer complains about missing classes, instead i got this.
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