[GitHub] [beam] pabloem commented on a change in pull request #11166: [BEAM-7923] Emit info when capture control options are configured.

[GitBox <gi...@apache.org>]

pabloem commented on a change in pull request #11166: [BEAM-7923] Emit info when capture control options are configured.
URL: https://github.com/apache/beam/pull/11166#discussion_r395233280
 
 

 ##########
 File path: sdks/python/apache_beam/runners/interactive/interactive_beam.py
 ##########
 @@ -64,11 +67,33 @@ def enable_capture_replay(self, value):
     and pipeline runs always use the same data captured; False - Disables
     capture of replayable source data so that following PCollection evaluation
     and pipeline runs always use new data from sources."""
+    # This makes sure the log handler is configured correctly in case the
+    # options are configured in an early stage.
+    _ = ie.current_env()
+    if value:
+      _LOGGER.info(
+          'Capture replay is enabled. When a PCollection is evaluated or the '
+          'pipeline is executed, existing data captured from previous '
+          'computations will be replayed for replayability. If no capture is '
+          'available, new data from capturable sources will be captured.')
+    else:
+      _LOGGER.info(
+          'You have disabled capture replay. The next time a PCollection is '
+          'evaluated or the pipeline is executed, new data will always be '
+          'captured from capturable sources. You will not have replayability '
+          'until re-enabling this option.')
     self.capture_control._enable_capture_replay = value
 
   @property
   def capturable_sources(self):
-    """Interactive Beam automatically captures data from sources in this set."""
+    """Interactive Beam automatically captures data from sources in this set.
+    """
+    _ = ie.current_env()
+    _LOGGER.info(
+        'If you alter the capturable sources, to allow new data for the '
+        'altered sources being captured the next time a PCollection is '
 
 Review comment:
   ```suggestion
           'altered sources to be captured the next time a PCollection is '
   ```

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