Hi all, I'm facing the problem that Solr is throwing a NullPointerException when performing a distributed search with multiple shards having elevation configured where one or more shards do have elevated results but others do not.
We are using Solr 8.2 and have the QueryElevationComponent configured with "last-components" of the default search handler "/select". But the problem also occurs when using the explicit "/elevate" search handler. <requestHandler name="/select" class="solr.SearchHandler"> ... <arr name="last-components"> <str>elevator</str> </arr> </requestHandler> ... <searchComponent name="elevator" class="solr.QueryElevationComponent" > <!-- pick a fieldType to analyze queries --> <str name="queryFieldType">string</str> <str name="config-file">elevate.xml</str> </searchComponent> ### Steps to reproduce: (1) Add entries to the elevate.xml of each core to elevate a specific document for the text "searchTerm": core1: <elevate> ... <query text="searchTerm"><doc id="core1docId1" /></query> </elevate> core2: <elevate> ... <query text="searchTerm"><doc id="core2docId1" /></query> </elevate> (2) Execute query (we use port 9983): http://localhost:9983/solr/web/select?q=elevatedTerm&lowercaseOperators=false&df=text_en&defType=edismax&fq=lang:en&shards=localhost:9983/solr/core1,localhost:9983/solr/core2&fl=[elevated],[shard],area,id&rows=10&start=0 Now as both shards have elevated documents for the requested "searchTerm" the search results are as expected: response: { numFound: 5192, start: 0, maxScore: 1.9032197, docs: [{ area: "press", id: "core1docId1", [elevated]: true, [shard]: "localhost:9983/solr/core1" }, { area: "products", id: "core2docId1", [elevated]: true, [shard]: "localhost:9983/solr/core2" }, { area: "press", id: "core1docId2", [elevated]: false, [shard]: "localhost:9983/solr/core1" }, ... (3) Remove the elevation entry for that "searchTerm" from one of the cores, e.g. via comment core2: <elevate> ... <!-- <query text="searchTerm"><doc id="core2docId1" /></query> --> </elevate> (4) Reload the modified core: http://localhost:9983/solr/admin/cores?action=RELOAD&core=core2 (5) Request same query again and you get the NPE: error: { trace: "java.lang.NullPointerException at org.apache.solr.handler.component.QueryComponent.unmarshalSortValues(QueryComponent.java:1068) at org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:917) at org.apache.solr.handler.component.QueryComponent.handleRegularResponses(QueryComponent.java:613) at org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:592) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:431) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2578) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:780) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:566) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:423) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:350) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540) ... I want to ask the community if I'm missing something or if this really is a bug. Thanks in advance, Marc Marc Linden Developer Virtual Identity AG Grünwälderstraße 10-14 79098 Freiburg +49 761 20758-422 -- marc.lin...@virtual-identity.com http://www.virtual-identity.com Freiburg | München | Wien | Porto ________________________________ Virtual Identity AG Grünwälderstraße 10-14 79098 Freiburg Amtsgericht Freiburg, HRB 6218 Vorstand: Ralf Heller Vorsitzende des Aufsichtsrates: Kirsten Heller Umsatzsteuer-ID: DE208002218
