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Provide a better error when beam plugin was supplied but wasn't staged. #39440

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Provide a better error when beam plugin was supplied but wasn't staged. #39440

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Provide better error when beam plugin was supplied but wasn't staged.
tvalentyn Jul 22, 2026
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tvalentyn Jul 22, 2026
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13 changes: 9 additions & 4 deletions sdks/python/apache_beam/runners/worker/sdk_worker_main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -57,17 +57,22 @@ def _import_beam_plugins(plugins):
try:
importlib.import_module(plugin)
_LOGGER.debug('Imported beam-plugin %s', plugin)
except ImportError:
except ImportError as exc:
if '.' not in plugin:
_LOGGER.warning('Failed to import beam-plugin %s', plugin, exc_info=exc)
continue

try:
_LOGGER.debug((
"Looks like %s is not a module. "
"Trying to import it assuming it's a class"),
"Trying to import it assuming it's a class."),
plugin)
module, _ = plugin.rsplit('.', 1)
importlib.import_module(module)
_LOGGER.debug('Imported %s for beam-plugin %s', module, plugin)
except ImportError as exc:
_LOGGER.warning('Failed to import beam-plugin %s', plugin, exc_info=exc)
except ImportError as fallback_exc:
_LOGGER.warning(
'Failed to import beam-plugin %s', plugin, exc_info=fallback_exc)


def create_harness(environment, dry_run=False):
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