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Add note in Updating.md about the removel of DagRun.ID_PREFIX #8949

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Merged
kaxil merged 1 commit into from
May 21, 2020
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Add note in Updating.md about the removel of DagRun.ID_PREFIX #8949

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24 changes: 24 additions & 0 deletions UPDATING.md
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,30 @@ To maintain consistent behavior, both successful or skipped downstream task can
`wait_for_downstream=True` flag.


### Use DagRunType.SCHEDULED.value instead of DagRun.ID_PREFIX

All the run_id prefixes for different kind of DagRuns have been grouped into a single
enum in `airflow.utils.types.DagRunType`.

Previously, there were defined in various places, example as `ID_PREFIX` class variables for
`DagRun`, `BackfillJob` and in `_trigger_dag` function.

Was:

```python
>> from airflow.models.dagrun import DagRun
>> DagRun.ID_PREFIX
scheduled__
```

Replaced by:

```python
>> from airflow.utils.types import DagRunType
>> DagRunType.SCHEDULED.value
scheduled
```

### Ability to patch Pool.DEFAULT_POOL_NAME in BaseOperator
It was not possible to patch pool in BaseOperator as the signature sets the default value of pool
as Pool.DEFAULT_POOL_NAME.
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