Improve exception message in AbstractService
diff --git a/core/src/main/java/org/apache/calcite/avatica/remote/AbstractService.java b/core/src/main/java/org/apache/calcite/avatica/remote/AbstractService.java
index ffaa360..a082f43 100644
--- a/core/src/main/java/org/apache/calcite/avatica/remote/AbstractService.java
+++ b/core/src/main/java/org/apache/calcite/avatica/remote/AbstractService.java
@@ -89,7 +89,8 @@
       case PROTOBUF:
         return column;
       default:
-        throw new IllegalStateException("Unhadled case statement");
+        throw new IllegalStateException("Unhandled case statement with serializationType: "
+                + getSerializationType());
       }
     case Types.DECIMAL:
     case Types.NUMERIC: