Fix for inconsistent Bigint/Long datatype that makes dbt think there was a schema change

.changes/unreleased/Fixes-20220923-185533.yaml

@@ -0,0 +1,8 @@
+kind: Fixes
+body: Handled inconsistent Bigint/Long datatype returned by Spark using `describe`
+  and `show table extended`
+time: 2022-09-23T18:55:33.119505+02:00
+custom:
+  Author: francescomucio
+  Issue: "357"
+  PR: "358"

dbt/adapters/spark/column.py

@@ -1,5 +1,5 @@
 from dataclasses import dataclass
-from typing import Any, Dict, Optional, TypeVar, Union
+from typing import Any, ClassVar, Dict, Optional, TypeVar, Union
 
 from dbt.adapters.base.column import Column
 from dbt.dataclass_schema import dbtClassMixin
@@ -17,9 +17,13 @@ class SparkColumn(dbtClassMixin, Column):
     table_stats: Optional[Dict[str, Any]] = None
     column_index: Optional[int] = None
 
+    TYPE_LABELS: ClassVar[Dict[str, str]] = {
+        "LONG": "BIGINT",
+    }
+
     @classmethod
     def translate_type(cls, dtype: str) -> str:
-        return dtype
+        return super().translate_type(dtype).lower()
 
     def can_expand_to(self: Self, other_column: Self) -> bool:  # type: ignore
         """returns True if both columns are strings"""
@@ -34,7 +38,7 @@ def quoted(self) -> str:
 
     @property
     def data_type(self) -> str:
-        return self.dtype
+        return self.translate_type(self.dtype)
 
     @classmethod
     def numeric_type(cls, dtype: str, precision: Any, scale: Any) -> str:
@@ -45,7 +49,7 @@ def numeric_type(cls, dtype: str, precision: Any, scale: Any) -> str:
             return "{}({},{})".format("decimal", precision, scale)
 
     def __repr__(self) -> str:
-        return "<SparkColumn {} ({})>".format(self.name, self.data_type)
+        return "<SparkColumn {} ({})>".format(self.name, self.translate_type(self.data_type))
 
     @staticmethod
     def convert_table_stats(raw_stats: Optional[str]) -> Dict[str, Any]: