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https://issues.apache.org/jira/browse/AIRFLOW-3702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16764065#comment-16764065
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ASF GitHub Bot commented on AIRFLOW-3702:
-----------------------------------------
dima-asana commented on pull request #4676: [AIRFLOW-3702] Add backfill option
to run backwards
URL: https://github.com/apache/airflow/pull/4676
Make sure you have checked _all_ steps below.
### Jira
- [x] My PR addresses the following:
- https://issues.apache.org/jira/browse/AIRFLOW-3702
### Description
- [x] Here are some details about my PR, including screenshots of any UI
changes:
This adds an optional capability for the backfill CLI command to process
dates in reverse order.
### Tests
- [x] My PR adds the following unit tests:
test_jobs::BackfillJobTest::test_backfill_run_backwards
### Commits
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have squashed multiple commits if they address the same issue. In addition, my
commits follow the guidelines from "[How to write a good git commit
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1. Subject is separated from body by a blank line
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### Documentation
- [x] In case of new functionality, my PR adds documentation that describes
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- When adding new operators/hooks/sensors, the autoclass documentation
generation needs to be added.
- All the public functions and the classes in the PR contain docstrings
that explain what it does
### Code Quality
- [x] Passes `flake8`
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> Reverse Backfilling(from current date to start date)
> ----------------------------------------------------
>
> Key: AIRFLOW-3702
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3702
> Project: Apache Airflow
> Issue Type: Improvement
> Components: configuration, DAG, models
> Affects Versions: 1.10.1
> Environment: MacOS High Sierra
> python2.7
> Airflow-1.10.1
> Reporter: Shubham Gupta
> Assignee: Tao Feng
> Priority: Major
> Labels: critical, improvement, priority
> Fix For: 2.0.0
>
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> Hello,
> I think there is a need to have reverse backfilling option as well because
> recent jobs would take precedence over the historical jobs. We can come up
> with some variable in the DAG such as dagrun_order_default = True/False .
> This would help in many use cases, in which previous date pipeline does not
> depends on current pipeline.
> I saw this page which talks about this ->
> http://mail-archives.apache.org/mod_mbox/airflow-dev/201804.mbox/%3CCAPUwX3M7_qrn=1bqysmkdv_ifjbta6lbtq7czhhexszmdjk...@mail.gmail.com%3E
> Thanks!
> Regards,
> Shubham
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