Using DSE 5.1.15, when I attempt to do a Solr query that includes missing facets, I get a null-pointer exception. Here's an example:
cqlsh> select * from group where solr_query='{"q":"id:*","facet":{"field":"s_pr3","missing":true}}';
ServerError: com.fasterxml.jackson.databind.JsonMappingException: [no message for java.lang.NullPointerException]
I assume the NPE is due to the null value that it's trying to serialize into JSON as the facet field name. I can work around this by using `pivot` instead of `field`, but I don't want to pivot, just use simple field facets.
https://datastaxacademy.slack.com/archives/C27T9EEP9/p1561130834018700
Here is the stack trace from system.log:
ERROR [Native-Transport-Requests-1] 2019-06-21 15:10:32,548 CqlSolrQueryExecutor.java:436 - com.fasterxml.jackson.databind.JsonMappingException: [no message for java.lang.NullPointerException] java.lang.RuntimeException: com.fasterxml.jackson.databind.JsonMappingException: [no message for java.lang.NullPointerException] at com.datastax.bdp.search.solr.cql.FacetResponseHandler.handle(FacetResponseHandler.java:109) at com.datastax.bdp.search.solr.cql.CustomPayloadResponseDecorator.handle(CustomPayloadResponseDecorator.java:37) at com.datastax.bdp.search.solr.cql.CqlSolrQueryExecutor.handleSolrResponse(CqlSolrQueryExecutor.java:421) at com.datastax.bdp.search.solr.cql.CqlSolrQueryExecutor.execute(CqlSolrQueryExecutor.java:134) at com.datastax.bdp.cassandra.cql3.SolrOperationFactory$SolrStatementExecution.execute(SolrOperationFactory.java:74) at com.datastax.bdp.cassandra.cql3.DseQueryHandler$Operation.executeWithTiming(DseQueryHandler.java:388) at com.datastax.bdp.cassandra.cql3.DseQueryHandler$Operation.executeAndMaybeWriteToAuditLog(DseQueryHandler.java:439) at com.datastax.bdp.cassandra.cql3.DseQueryHandler.process(DseQueryHandler.java:165) at com.datastax.bdp.cassandra.cql3.DseQueryHandler.process(DseQueryHandler.java:116) at org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:112) at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:548) at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:442) at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356) at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:35) at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:347) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:162) at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748) Caused by: com.fasterxml.jackson.databind.JsonMappingException: [no message for java.lang.NullPointerException] at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._wrapAsIOE(DefaultSerializerProvider.java:509) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:482) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) at com.fasterxml.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:2643) at com.fasterxml.jackson.core.base.GeneratorBase.writeObject(GeneratorBase.java:381) at com.fasterxml.jackson.core.JsonGenerator.writeObjectField(JsonGenerator.java:1726) at com.datastax.bdp.search.solr.cql.FacetResponseHandler$NamedListSerializer.serialize(FacetResponseHandler.java:152) at com.datastax.bdp.search.solr.cql.FacetResponseHandler$NamedListSerializer.serialize(FacetResponseHandler.java:138) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3893) at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:3207) at com.datastax.bdp.search.solr.cql.FacetResponseHandler.fillFacetColumns(FacetResponseHandler.java:133) at com.datastax.bdp.search.solr.cql.FacetResponseHandler.handle(FacetResponseHandler.java:97) ... 20 common frames omitted Caused by: java.lang.NullPointerException: null at com.fasterxml.jackson.core.json.WriterBasedJsonGenerator._writeString(WriterBasedJsonGenerator.java:964) at com.fasterxml.jackson.core.json.WriterBasedJsonGenerator._writeFieldName(WriterBasedJsonGenerator.java:174) at com.fasterxml.jackson.core.json.WriterBasedJsonGenerator.writeFieldName(WriterBasedJsonGenerator.java:139) at com.fasterxml.jackson.core.JsonGenerator.writeObjectField(JsonGenerator.java:1725) at com.datastax.bdp.search.solr.cql.FacetResponseHandler$NamedListSerializer.serialize(FacetResponseHandler.java:152) at com.datastax.bdp.search.solr.cql.FacetResponseHandler$NamedListSerializer.serialize(FacetResponseHandler.java:138) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480) ... 32 common frames omitted
