分布式调度框架。
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# UPDATING
Updating is try to document non-backward compatible updates which notice users the detail changes about pydolphinscheduler.
It started after version 2.0.5 released
## dev
* Remove parameter ``task_location`` in process definition and Java Gateway service ([#11681](https://github.com/apache/dolphinscheduler/pull/11681))
* Remove the spark version of spark task ([#11860](https://github.com/apache/dolphinscheduler/pull/11860)).
## 3.0.0
* Integrate Python gateway server into Dolphinscheduler API server, and you could start Python gateway service by command
`./bin/dolphinscheduler-daemon.sh start api-server` instead of independent command
`./bin/dolphinscheduler-daemon.sh start python-gateway-server`.
* Remove parameter `queue` from class `ProcessDefinition` to avoid confuse user when it change but not work
* Change `yaml_parser.py` method `to_string` to magic method `__str__` make it more pythonic.
* Use package ``ruamel.yaml`` replace ``pyyaml`` for write yaml file with comment.
* Change variable about where to keep pydolphinscheduler configuration from ``PYDOLPHINSCHEDULER_HOME`` to
``PYDS_HOME`` which is same as other environment variable name.