joeyutong opened a new pull request, #943: URL: https://github.com/apache/flink-agents/pull/943
Linked issue: #941 ### Purpose of change Flink may rematerialize a job's Python dependencies under a new `python-dist-*` directory after task failover, while Pemja's process-level main interpreter and its import state remain alive in the TaskManager JVM. Existing user modules can therefore keep `__file__`, `__path__`, or `__spec__` entries that point to the removed dependency directory. This change activates each job's current dependency generation before loading Python actions or resources. When the generation changes, it: - clears the Flink Agents Python function cache; - evicts modules attributed to the previous generation from `sys.modules`; - removes stale `sys.path` and importer-cache entries; - prepends the current generation's `PYTHONPATH` entries; and - preserves modules and paths owned by other active jobs. The generation is recorded only after the refresh succeeds, so a failed refresh is retried on the next initialization. ### Tests - `uv run --project python pytest -q python/flink_agents/runtime/tests/test_python_dependency.py` (3 passed) - `mvn -B --no-transfer-progress -pl runtime -am -Dtest=PythonDependencyGenerationManagerTest -Dsurefire.failIfNoSpecifiedTests=false test` (1 passed) - Maven Spotless formatting/checks passed as part of the Java verification ### API No public API changes. ### Documentation - [ ] `doc-needed` - [x] `doc-not-needed` - [ ] `doc-included` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
