Almost working

contrib/storage-druid/pom.xml

@@ -29,7 +29,7 @@
     <artifactId>drill-druid-storage</artifactId>
     <name>Drill : Contrib : Storage : Druid</name>
     <properties>
-        <druid.TestSuite>**/DruidTestSuit.class</druid.TestSuite>
+        <druid.TestSuite>**/DruidTestSuite.class</druid.TestSuite>
     </properties>
     <dependencies>
         <dependency>

contrib/storage-druid/src/main/java/org/apache/drill/exec/store/druid/DruidBatchRecordReader.java

@@ -24,7 +24,6 @@
 import org.apache.drill.common.exceptions.CustomErrorContext;
 import org.apache.drill.common.exceptions.UserException;
 import org.apache.drill.common.expression.SchemaPath;
-import org.apache.drill.exec.ops.FragmentContext;
 import org.apache.drill.exec.physical.impl.scan.framework.ManagedReader;
 import org.apache.drill.exec.physical.impl.scan.framework.SchemaNegotiator;
 import org.apache.drill.exec.physical.resultSet.ResultSetLoader;
@@ -47,43 +46,30 @@
 
 public class DruidBatchRecordReader implements ManagedReader<SchemaNegotiator> {
   private static final Logger logger = LoggerFactory.getLogger(DruidBatchRecordReader.class);
-
   private static final ObjectMapper objectMapper = new ObjectMapper();
-
   private final DruidStoragePlugin plugin;
   private final DruidSubScan.DruidSubScanSpec scanSpec;
   private final List<String> columns;
   private final DruidFilter filter;
   private final DruidQueryClient druidQueryClient;
-  private final FragmentContext fragmentContext;
-
-  private final DruidSubScan subScan;
 
-  private final TupleMetadata schema;
   private BigInteger nextOffset = BigInteger.ZERO;
   private int maxRecordsToRead = -1;
-
   private JsonLoaderBuilder jsonBuilder;
-
   private JsonLoader jsonLoader;
   private ResultSetLoader resultSetLoader;
-
   private CustomErrorContext errorContext;
 
 
   public DruidBatchRecordReader(DruidSubScan subScan,
                                 DruidSubScanSpec subScanSpec,
                                 List<SchemaPath> projectedColumns,
                                 int maxRecordsToRead,
-                                FragmentContext context,
                                 DruidStoragePlugin plugin) {
-    this.subScan = subScan;
-    columns = new ArrayList<>();
+    this.columns = new ArrayList<>();
     this.maxRecordsToRead = maxRecordsToRead;
     this.plugin = plugin;
-    scanSpec = subScanSpec;
-    this.schema = subScan.getSchema();
-    fragmentContext = context;
+    this.scanSpec = subScanSpec;
     this.filter = subScanSpec.getFilter();
     this.druidQueryClient = plugin.getDruidQueryClient();
   }
@@ -96,10 +82,9 @@ public boolean open(SchemaNegotiator negotiator) {
 
     jsonBuilder = new JsonLoaderBuilder()
       .resultSetLoader(resultSetLoader)
+      .standardOptions(negotiator.queryOptions())
       .errorContext(errorContext);
 
-
-
     return true;
   }
 
@@ -112,9 +97,10 @@ public boolean next() {
       setNextOffset(druidScanResponse);
 
       for (ObjectNode eventNode : druidScanResponse.getEvents()) {
-        jsonLoader = jsonBuilder
-          .fromString(eventNode.asText())
+        JsonLoader jsonLoader = jsonBuilder
+          .fromString(eventNode.toString())
           .build();
+
         result = jsonLoader.readBatch();
       }
       return result;

contrib/storage-druid/src/main/java/org/apache/drill/exec/store/druid/DruidGroupScan.java

@@ -23,7 +23,6 @@
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
-import org.apache.calcite.avatica.Meta;
 import org.apache.drill.common.PlanStringBuilder;
 import org.apache.drill.common.expression.SchemaPath;
 import org.apache.drill.exec.metastore.MetadataProviderManager;
@@ -58,9 +57,7 @@ public class DruidGroupScan extends AbstractGroupScan {
   private static final long DEFAULT_TABLET_SIZE = 1000;
   private final DruidScanSpec scanSpec;
   private final DruidStoragePlugin storagePlugin;
-
-  private MetadataProviderManager metadataProviderManager;
-
+  private final MetadataProviderManager metadataProviderManager;
   private List<SchemaPath> columns;
   private boolean filterPushedDown = false;
   private int maxRecordsToRead;
@@ -293,6 +290,11 @@ public int getMaxRecordsToRead() {
     return maxRecordsToRead;
   }
 
+  @JsonIgnore
+  public MetadataProviderManager getMetadataProviderManager() {
+    return metadataProviderManager;
+  }
+
   public TupleMetadata getSchema() {
     if (metadataProviderManager == null) {
       return null;

contrib/storage-druid/src/main/java/org/apache/drill/exec/store/druid/DruidPushDownFilterForScan.java

@@ -70,7 +70,8 @@ public void onMatch(RelOptRuleCall relOptRuleCall) {
             groupScan.getStoragePlugin(),
             newScanSpec,
             groupScan.getColumns(),
-            groupScan.getMaxRecordsToRead());
+            groupScan.getMaxRecordsToRead(),
+            groupScan.getMetadataProviderManager());
     newGroupsScan.setFilterPushedDown(true);
 
     ScanPrel newScanPrel = scan.copy(filter.getTraitSet(), newGroupsScan, filter.getRowType());