Null pointer exception in QueryComponent.MergeDds method

[Jae Joo]

I am seeing the nullPointerException in the list below and I am
looking for how to fix the exception.

Thanks,


NamedList sortFieldValues =
(NamedList)(srsp.getSolrResponse().getResponse().get("sort_values"));
if (sortFieldValues.size()==0 && // we bypass merging this response
only if it's partial itself
                    thisResponseIsPartial) { // but not the previous one!!
  continue; //fsv timeout yields empty sort_vlaues
}



2020-07-06 12:45:47.001 ERROR (qtp745962066-636182) [c:xxxx]]
o.a.s.h.RequestHandlerBase java.lang.NullPointerException
        at
org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:914)
        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:198)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:2576)
        at
org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:799)
        at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:578)
        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:419)
        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:351)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
        at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)
        at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
        at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
        at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
        at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1711)
        at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)