[jira] [Created] (SOLR-13022) JSON Faceting NPE & 500 Error when attempting to sort on non-existent agg (ie: typo)

["Hoss Man (JIRA)" <ji...@apache.org>]

Hoss Man created SOLR-13022:
-------------------------------

             Summary: JSON Faceting NPE & 500 Error when attempting to sort on non-existent agg (ie: typo)
                 Key: SOLR-13022
                 URL: https://issues.apache.org/jira/browse/SOLR-13022
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Hoss Man
            Assignee: Hoss Man


JSON Faceting does not provide good error handling in the event of a typo / non-existent agg stat name when sorting.  the parsing logic happily accepts the bogus sortVariable w/o validation, and the subsequent execution logic trows an NPE when it can't be found.

Request...
{noformat}
curl http://localhost:8983/solr/techproducts/query -d 'rows=0&q=*:*&
json.facet={
  categories:{
    type : terms,
    field : cat,
    sort : "xxxxx desc",
  }
}'
{noformat}

Response...
{noformat}
{
  "responseHeader":{
    "status":500,
    "QTime":1,
    "params":{
      "q":"*:*",
      "json.facet":"{\n  categories:{\n    type : terms,\n    field : cat,\n    sort : \"xxxxx desc\",\n  }\n}",
      "rows":"0"}},
  "response":{"numFound":32,"start":0,"docs":[]
  },
  "error":{
    "trace":"java.lang.NullPointerException\n\tat org.apache.solr.search.facet.FacetFieldProcessor.lambda$findTopSlots$1(FacetFieldProcessor.java:287)
    ...
{noformat}




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