Addressing sonar issues

Author: soumyakanti3578

ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveRelFieldTrimmer.java

@@ -202,6 +202,7 @@ protected RexNode handle(RexFieldAccess fieldAccess) {
     return dispatchTrimFields(input, fieldsUsedBuilder.build(), extraFields);
   }
 
+  @Override
   protected void setColumnAccessInfoForViews(RelNode rel, ImmutableBitSet fieldsUsed) {
     final ColumnAccessInfo columnAccessInfo = COLUMN_ACCESS_INFO.get();
     final Map<RelNode, Table> relNodeToTableAndProjects = VIEW_RELNODE_TO_TABLE.get();

ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/RelFieldTrimmer.java

@@ -1239,8 +1239,17 @@ public TrimResult trimFields(
     final Mapping mapping = createMapping(fieldsUsed, fieldCount);
     return result(newTableAccessRel, mapping);
   }
-  
-  protected void setColumnAccessInfoForViews(RelNode rel, ImmutableBitSet fieldsUsed) {}
+
+  /**
+   * Sets columnAccessInfo object for views.
+   * 
+   * @param rel RelNode
+   * @param fieldsUsed Fields used
+   */
+  protected void setColumnAccessInfoForViews(RelNode rel, ImmutableBitSet fieldsUsed) {
+    // This method is overridden in child class
+    throw new UnsupportedOperationException();
+  }
 
   //~ Inner Classes ----------------------------------------------------------
 

ql/src/java/org/apache/hadoop/hive/ql/parse/CalcitePlanner.java

@@ -28,7 +28,6 @@
 import com.google.common.collect.Multimap;
 
 import java.util.Map.Entry;
-import java.util.Objects;
 import java.util.Optional;
 import java.util.function.Function;
 import java.util.regex.Pattern;