Fix Athena sample DAG (#341)

Signed-off-by: Tao Feng <fengtao04@gmail.com>

example/dags/athena_sample_dag.py

@@ -77,7 +77,7 @@ def connection_string():
     return "awsathena+rest://%s:%s@%s:443/?%s" % (access_key, secret, host, extras)
 
 
-def create_table_extract_job(**kwargs):
+def create_table_extract_job():
     where_clause_suffix = textwrap.dedent("""
         where table_schema in {schemas}
     """).format(schemas=SUPPORTED_SCHEMA_SQL_IN_CLAUSE)
@@ -162,14 +162,15 @@ def create_es_publisher_sample_job():
 
 
 with DAG('amundsen_databuilder', default_args=default_args, **dag_args) as dag:
-    create_table_extract_job()
-    # create_table_extract_job = PythonOperator(
-    #     task_id='create_table_extract_job',
-    #     python_callable=create_table_extract_job
-    # )
-
-    create_es_index_job = PythonOperator(
-        task_id='create_es_publisher_sample_job',
+    athena_table_extract_job = PythonOperator(
+        task_id='athena_table_extract_job',
+        python_callable=create_table_extract_job
+    )
+
+    athena_es_publisher_job = PythonOperator(
+        task_id='athena_es_publisher_job',
         python_callable=create_es_publisher_sample_job
     )
-    create_es_publisher_sample_job()
+
+    # elastic search update run after table metadata has been updated
+    athena_table_extract_job >> athena_es_publisher_job