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[RLlib] ConnectorV2: Fix bug in AddColumnsFromEpisodesToTrainBatch class (multi-agent related). #43680

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sven1977
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@sven1977 sven1977 commented Mar 4, 2024

ConnectorV2: Fix bug in AddColumnsFromEpisodesToTrainBatch class (multi-agent related).

The bug would appear only in multi-agent AND if one RLModule does NOT produce action_dist_inputs (b/c e.g. it's a random one). It was caused by using a (random) single agent episode as a reference episode to figure out, which extra_model_output columns to loop through. If this reference single agent episode was from the random RLModule, the column action_dist_inputs (and others) would be missing.

Why are these changes needed?

Related issue number

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  • I've signed off every commit(by using the -s flag, i.e., git commit -s) in this PR.
  • I've run scripts/format.sh to lint the changes in this PR.
  • I've included any doc changes needed for https://docs.ray.io/en/master/.
    • I've added any new APIs to the API Reference. For example, if I added a
      method in Tune, I've added it in doc/source/tune/api/ under the
      corresponding .rst file.
  • I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
  • Testing Strategy
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    • This PR is not tested :(

Signed-off-by: sven1977 <svenmika1977@gmail.com>
@sven1977 sven1977 added the tests-ok The tagger certifies test failures are unrelated and assumes personal liability. label Mar 5, 2024
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LGTM. The problem with custom columns sometimes overridden should be fixed with this.

agents_that_stepped_only=False,
):
for column in sa_episode.extra_model_outputs.keys():
if column not in skip_columns:
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Great! That should leave all custom columns untouched now.

@@ -1706,12 +1706,3 @@ def _set_optimizer_lr(optimizer: Optimizer, lr: float) -> None:
@abc.abstractmethod
def _get_clip_function() -> Callable:
"""Returns the gradient clipping function to use, given the framework."""

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Haha yes, hps has now gone to the dark side :)

@sven1977 sven1977 merged commit d1255fd into ray-project:master Mar 5, 2024
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@sven1977 sven1977 deleted the fix_bug_in_add_column_to_train_batch_connector branch March 5, 2024 12:53
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2 participants