[AIRFLOW-4321] Replace incorrect info of Max Size limit of GCS Object…

… Size (apache#5106)

airflow/contrib/operators/cassandra_to_gcs.py

@@ -57,9 +57,9 @@ class CassandraToGoogleCloudStorageOperator(BaseOperator):
     :type schema_filename: str
     :param approx_max_file_size_bytes: This operator supports the ability
         to split large table dumps into multiple files (see notes in the
-        filenamed param docs above). Google cloud storage allows for files
-        to be a maximum of 4GB. This param allows developers to specify the
-        file size of the splits.
+        filename param docs above). This param allows developers to specify the
+        file size of the splits. Check https://cloud.google.com/storage/quotas
+        to see the maximum allowed file size for a single object.
     :type approx_max_file_size_bytes: long
     :param cassandra_conn_id: Reference to a specific Cassandra hook.
     :type cassandra_conn_id: str

airflow/contrib/operators/mysql_to_gcs.py

@@ -59,9 +59,9 @@ class MySqlToGoogleCloudStorageOperator(BaseOperator):
     :type schema_filename: str
     :param approx_max_file_size_bytes: This operator supports the ability
         to split large table dumps into multiple files (see notes in the
-        filenamed param docs above). Google cloud storage allows for files
-        to be a maximum of 4GB. This param allows developers to specify the
-        file size of the splits.
+        filename param docs above). This param allows developers to specify the
+        file size of the splits. Check https://cloud.google.com/storage/quotas
+        to see the maximum allowed file size for a single object.
     :type approx_max_file_size_bytes: long
     :param mysql_conn_id: Reference to a specific MySQL hook.
     :type mysql_conn_id: str

airflow/contrib/operators/postgres_to_gcs_operator.py

@@ -70,9 +70,9 @@ def __init__(self,
         :type schema_filename: str
         :param approx_max_file_size_bytes: This operator supports the ability
             to split large table dumps into multiple files (see notes in the
-            filenamed param docs above). Google Cloud Storage allows for files
-            to be a maximum of 4GB. This param allows developers to specify the
-            file size of the splits.
+            filename param docs above). This param allows developers to specify the
+            file size of the splits. Check https://cloud.google.com/storage/quotas
+            to see the maximum allowed file size for a single object.
         :type approx_max_file_size_bytes: long
         :param postgres_conn_id: Reference to a specific Postgres hook.
         :type postgres_conn_id: str