#14043 - Fix metadata backup memory profile (#14378)

* Update looker docs

* Fix db dump

ingestion/src/metadata/cli/db_dump.py

@@ -123,9 +123,12 @@ def get_hash_column_name(engine: Engine, table_name: str) -> Optional[str]:
 
 def run_query_iter(engine: Engine, query: str) -> Iterable[Row]:
     """Return a generator of rows, one row at a time, with a limit of 100 in-mem rows"""
-
-    for row in engine.execute(text(query)).yield_per(100):
-        yield row
+    with engine.connect() as conn:
+        result = conn.execution_options(
+            stream_results=True, max_row_buffer=100
+        ).execute(text(query))
+        for row in result:
+            yield row
 
 
 def dump_json(tables: List[str], engine: Engine, output: Path) -> None:

ingestion/src/metadata/cmd.py

@@ -435,12 +435,9 @@ def metadata(args=None):
     contains_args = vars(get_parser(args))
     metadata_workflow = contains_args.get("command")
     config_file = contains_args.get("config")
+    path = None
     if config_file:
         path = Path(config_file).expanduser()
-    else:
-        raise ValueError(
-            "Could not load config file! Please specify the config path with `-c` or `--config`."
-        )
     if contains_args.get("debug"):
         set_loggers_level(logging.DEBUG)
     elif contains_args.get("log_level"):

openmetadata-docs/content/v1.2.x/connectors/dashboard/looker/index.md

@@ -45,6 +45,9 @@ with read only access to the repository. You can follow these steps from the Git
 The GitHub credentials are completely optional. Just note that without them, we won't be able to ingest metadata
 out of LookML Views, including their lineage to the source databases.
 
+Moreover, Looker lineage only supports LookML views configured with `sql_table_name` and `derived_table` in plain SQL.
+We do not yet support liquid variables.
+
 {% /note %}
 
 ## Metadata Ingestion

openmetadata-docs/content/v1.2.x/connectors/dashboard/looker/yaml.md

@@ -50,6 +50,9 @@ with read only access to the repository. You can follow these steps from the Git
 The GitHub credentials are completely optional. Just note that without them, we won't be able to ingest metadata
 out of LookML Views, including their lineage to the source databases.
 
+Moreover, Looker lineage only supports LookML views configured with `sql_table_name` and `derived_table` in plain SQL.
+We do not yet support liquid variables.
+
 {% /note %}
 
 ### Python Requirements

openmetadata-docs/content/v1.3.x-SNAPSHOT/connectors/dashboard/looker/index.md

@@ -45,6 +45,9 @@ with read only access to the repository. You can follow these steps from the Git
 The GitHub credentials are completely optional. Just note that without them, we won't be able to ingest metadata
 out of LookML Views, including their lineage to the source databases.
 
+Moreover, Looker lineage only supports LookML views configured with `sql_table_name` and `derived_table` in plain SQL.
+We do not yet support liquid variables.
+
 {% /note %}
 
 ## Metadata Ingestion

openmetadata-docs/content/v1.3.x-SNAPSHOT/connectors/dashboard/looker/yaml.md

@@ -50,6 +50,9 @@ with read only access to the repository. You can follow these steps from the Git
 The GitHub credentials are completely optional. Just note that without them, we won't be able to ingest metadata
 out of LookML Views, including their lineage to the source databases.
 
+Moreover, Looker lineage only supports LookML views configured with `sql_table_name` and `derived_table` in plain SQL.
+We do not yet support liquid variables.
+
 {% /note %}
 
 ### Python Requirements