shahar1 commented on code in PR #43045:
URL: https://github.com/apache/airflow/pull/43045#discussion_r1801823395
##########
providers/src/airflow/providers/apache/hdfs/sensors/web_hdfs.py:
##########
@@ -41,3 +43,31 @@ def poke(self, context: Context) -> bool:
hook = WebHDFSHook(self.webhdfs_conn_id)
self.log.info("Poking for file %s", self.filepath)
return hook.check_for_path(hdfs_path=self.filepath)
+
+
+class MultipleFilesWebHdfsSensor(BaseSensorOperator):
+ """Waits for multiple files in a folder to land in HDFS."""
+
+ template_fields: Sequence[str] = ("directory_path", "expected_filenames")
+
+ def __init__(self, *, directory_path: str, expected_filenames:
Sequence[str],
+ webhdfs_conn_id: str = "webhdfs_default", **kwargs: Any) ->
None:
+ super().__init__(**kwargs)
+ self.directory_path = directory_path
+ self.expected_filenames = set(expected_filenames)
Review Comment:
```suggestion
self.expected_filenames = expected_filenames
```
You defined `expected_filenames` as a templated field, which means that [it
must be assigned
directly](https://airflow.apache.org/docs/apache-airflow/stable/howto/custom-operator.html#limitations).
If needed, you could apply it within the `poke()` method.
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