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  1. Solr
  2. SOLR-13202

Three NullPointerExceptions in org.apache.solr.search.JoinQuery.hashCode()

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: main (9.0)
    • Fix Version/s: None
    • Component/s: None
    • Labels:
    • Environment:

      Description

      Requesting any of the following URLs causes Solr to return an HTTP 500 error response:

      http://localhost:8983/solr/films/select?fq={!join%20from=b%20to=a}
      http://localhost:8983/solr/films/select?fq={!join%20to=a}
      http://localhost:8983/solr/films/select?fq={!join}
      

      The error response seems to be caused by the following uncaught exception:
       

      java.lang.NullPointerException
       at org.apache.solr.search.JoinQuery.hashCode(JoinQParserPlugin.java:578)
       at org.apache.solr.search.QueryResultKey.<init>(QueryResultKey.java:52)
       at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1328)
       at org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:567)
       at org.apache.solr.handler.component.QueryComponent.doProcessUngroupedSearch(QueryComponent.java:1434)
       at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:373)
       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:2559)
      [...]
      

      The problem seems to be related with method hasCode in the class org.apache.solr.search.JoinQuery:

        @Override
        public int hashCode() {
          int h = classHash();
          h = h * 31 + fromField.hashCode();
          h = h * 31 + toField.hashCode();
          h = h * 31 + q.hashCode();
          h = h * 31 + Objects.hashCode(fromIndex);
          h = h * 31 + (int) fromCoreOpenTime;
          return h;
        }
      

      The URLs provided above selectively leave uninitialized the fields fromField, fromIndex, q, and toField, but all of these fields are accessed by this method.
       
      We found this issue and ~70 more like this using Diffblue Microservices Testing. Find more information on this fuzz testing campaign.

        Attachments

        1. home.zip
          376 kB
          Cesar Rodriguez
        2. SOLR-13202.patch
          0.9 kB
          Pranay Kumar Chaudhary

          Activity

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            • Assignee:
              Unassigned
              Reporter:
              cesar.rodriguez Cesar Rodriguez
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              Dates

              • Created:
                Updated: