[jira] [Created] (SOLR-12107) [child] doc transformer used w/o uniqueKey in 'fl' fails with NPE unless documentCache is enabled

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

Hoss Man created SOLR-12107:
-------------------------------

             Summary: [child] doc transformer used w/o uniqueKey in 'fl' fails with NPE unless documentCache is enabled
                 Key: SOLR-12107
                 URL: https://issues.apache.org/jira/browse/SOLR-12107
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Hoss Man
            Assignee: Hoss Man


discovered this while working on SOLR-11891...

The ChildDocumentTransformer implicitly assumes the uniqueKey field will allways be available when transforming the doc, w/o explicitly requesting it via {{getExtraRequestFields()}}

Because of the existing sloppy code in SOLR-11891, that means this bug in ChildDocumentTransformer only impacts current users if the documentCache is disabled

----

Example steps to reproduce w/techproducts config assuming {{solrconfig.xml}} is edited to disable documentCache...

{noformat}
$ curl 'http://localhost:8983/solr/techproducts/update?commit=true' -H 'Content-Type: application/json' --data-binary '[
>   {
>     "id": "1",
>     "title": "Solr adds block join support",
>     "content_type": "parentDocument",
>     "_childDocuments_": [
>       {
>         "id": "2",
>         "comments": "SolrCloud supports it too!"
>       }
>     ]
>   },
>   {
>     "id": "3",
>     "title": "New Lucene and Solr release is out",
>     "content_type": "parentDocument",
>     "_childDocuments_": [
>       {
>         "id": "4",
>         "comments": "Lots of new features"
>       }
>     ]
>   }
> ]'
{
  "responseHeader":{
    "status":0,
    "QTime":69}}
$ curl 'http://localhost:8983/solr/techproducts/query?q=id:1'
{
  "responseHeader":{
    "status":0,
    "QTime":5,
    "params":{
      "q":"id:1"}},
  "response":{"numFound":1,"start":0,"docs":[
      {
        "id":"1",
        "title":["Solr adds block join support"],
        "content_type":["parentDocument"],
        "_version_":1595047178033692672}]
  }}
$ curl 'http://localhost:8983/solr/techproducts/query?q=id:1&fl=id,%5Bchild+parentFilter="content_type:parentDocument"%5D'
{
  "responseHeader":{
    "status":0,
    "QTime":0,
    "params":{
      "q":"id:1",
      "fl":"id,[child parentFilter=\"content_type:parentDocument\"]"}},
  "response":{"numFound":1,"start":0,"docs":[
      {
        "id":"1",
        "_childDocuments_":[
        {
          "id":"2",
          "comments":"SolrCloud supports it too!",
          "_version_":1595047178033692672}]}]
  }}
$ curl 'http://localhost:8983/solr/techproducts/query?q=id:1&fl=%5Bchild+parentFilter="content_type:parentDocument"%5D'
{
  "error":{
    "trace":"java.lang.NullPointerException\n\tat org.apache.solr.response.transform.ChildDocTransformer.transform(ChildDocTransformerFactory.java:133)\n\tat org.apache.solr.response.DocsStreamer.next(DocsStreamer.java:120)\n\tat org.apache.solr.response.DocsStreamer.next(DocsStreamer.java:57)\n\tat org.apache.solr.response.TextResponseWriter.writeDocuments(TextResponseWriter.java:275)\n\tat org.apache.solr.response.TextResponseWriter.writeVal(TextResponseWriter.java:161)\n\tat org.apache.solr.response.JSONWriter.writeNamedListAsMapWithDups(JSONResponseWriter.java:209)\n\tat org.apache.solr.response.JSONWriter.writeNamedList(JSONResponseWriter.java:325)\n\tat org.apache.solr.response.JSONWriter.writeResponse(JSONResponseWriter.java:120)\n\tat org.apache.solr.response.JSONResponseWriter.write(JSONResponseWriter.java:71)\n\tat org.apache.solr.response.QueryResponseWriterUtil.writeQueryResponse(QueryResponseWriterUtil.java:65)\n\tat org.apache.solr.servlet.HttpSolrCall.writeResponse(HttpSolrCall.java:789)\n\tat org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:526)\n\tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:384)\n\tat org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:330)\n\tat org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1629)\n\tat org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)\n\tat org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190)\n\tat org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)\n\tat org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)\n\tat org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)\n\tat org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155)\n\tat org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)\n\tat org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:219)\n\tat org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)\n\tat org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335)\n\tat org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)\n\tat org.eclipse.jetty.server.Server.handle(Server.java:530)\n\tat org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:347)\n\tat org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:256)\n\tat org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)\n\tat org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102)\n\tat org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)\n\tat org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247)\n\tat org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)\n\tat org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)\n\tat org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:382)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:708)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:626)\n\tat java.lang.Thread.run(Thread.java:748)\n",
    "code":500}}

{noformat}
 



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