This PR introduces cluster-level fault tolerance for Tune by checkpointing global state. This occurs with relatively high frequency and allows users to easily resume experiments when the cluster crashes.
Note that this PR may affect automated workflows due to auto-prompting, but this is resolvable.
This tests the case in which a worker is blocked in a call to ray.get or ray.wait, and then the worker dies. Then later, the object that the worker was waiting for becomes available. We need to make sure not to try to send a message to the dead worker and then die. Related to #2790.
This change addresses issue #2809. Test #2797 has been enabled for raylet and can pass.
The following should happen when a driver exits (either gracefully or ungracefully).
#2797 should be enabled and pass.
Any actors created by the driver that are still running should be killed.
Any workers running tasks for the driver should be killed.
Any tasks for the driver in any node_manager queues should be removed.
Any future tasks received by a node manager for the driver should be ignored.
The driver death notification should only be received once.
* Convert multi_node_test.py to pytest.
* Convert array_test.py to pytest.
* Convert failure_test.py to pytest.
* Convert microbenchmarks to pytest.
* Convert component_failures_test.py to pytest and some minor quotes changes.
* Convert tensorflow_test.py to pytest.
* Convert actor_test.py to pytest.
* Fix.
* Fix
* Add profile table and store profiling information there.
* Code for dumping timeline.
* Improve color scheme.
* Push timeline events on driver only for raylet.
* Improvements to profiling and timeline visualization
* Some linting
* Small fix.
* Linting
* Propagate node IP address through profiling events.
* Fix test.
* object_id.hex() should return byte string in python 2.
* Include gcs.fbs in node_manager.fbs.
* Remove flatbuffer definition duplication.
* Decode to unicode in Python 3 and bytes in Python 2.
* Minor
* Submit profile events in a batch. Revert some CMake changes.
* Fix
* Workaround test failure.
* Fix linting
* Linting
* Don't return anything from chrome_tracing_dump when filename is provided.
* Remove some redundancy from profile table.
* Linting
* Move TODOs out of docstring.
* Minor
* Print warning when defining very large remote function or actor.
* Add weak test.
* Check that warnings appear in test.
* Make wait_for_errors actually fail in failure_test.py.
* Use constants for error types.
* Fix
* Run xray tests in travis.
* Comment out TaskTests.testSubmittingManyTasks.
* Comment out failing tests.
* Comment out hanging test.
* Linting
* Comment out failing test.
* Comment out failing test.
* Ignore test_dataframe.py for now.
* Comment out testDriverExitingQuickly.
* Allow passing in --object-store-memory to ray start.
* Allow setting ports for the redis shards.
* Reorder arguments and infer number of shards from ports.
* Move code block into only the head node case.
* Add test.
* Enable scheduling with custom resource labels.
* Fix.
* Minor fixes and ref counting fix.
* Linting
* Use .data() instead of .c_str().
* Fix linting.
* Fix ResourcesTest.testGPUIDs test by waiting for workers to start up.
* Sleep in test so that all tasks are submitted before any completes.
* Make local scheduler start workers using the same version of Python that was used to start the local scheduler.
* Use current version of python to start new processes instead of hardcoded python executable.
* Fix linting.
* 4 space indentation for actor.py.
* 4 space indentation for worker.py.
* 4 space indentation for more files.
* 4 space indentation for some test files.
* Check indentation in Travis.
* 4 space indentation for some rl files.
* Fix failure test.
* Fix multi_node_test.
* 4 space indentation for more files.
* 4 space indentation for remaining files.
* Fixes.
* Remove import counter and export counter.
* Provide isolation between drivers for remote functions.
* Add test for driver function isolation.
* Hash source code into function ID to reduce likelihood of collisions.
* Fix failure test example.
* Replace assertTrue with assertIn to improve failure messages in tests.
* Fix failure test.
