dmateusp opened a new pull request #4663: [AIRFLOW-3822] Delete 
KubernetesPodOperator pod on kill
URL: https://github.com/apache/airflow/pull/4663
 
 
   
   
   Make sure you have checked _all_ steps below.
   
   ### Jira
   
   > - [X] My PR addresses the following [Airflow 
Jira](https://issues.apache.org/jira/browse/AIRFLOW/) issues and references 
them in the PR title. For example, "\[AIRFLOW-XXX\] My Airflow PR"
     - https://issues.apache.org/jira/browse/AIRFLOW-XXX
     - In case you are fixing a typo in the documentation you can prepend your 
commit with \[AIRFLOW-XXX\], code changes always need a Jira issue.
   
   https://issues.apache.org/jira/browse/AIRFLOW-3822
   
   ### Description
   
   > - [X] Here are some details about my PR, including screenshots of any UI 
changes:
   
   Correcting a behavior observed with the KubernetesExecutor + 
KubernetesPodOperator where a timeout kills the pod watcher but not the pod 
running the actual work.
   
   * I added an on_kill hook which removes the pod when the watcher pod is 
terminated.
   * I changed `pod` to `self.pod` in order to reference it in the `on_kill` 
function
   * I removed the general catch AirflowException, because the logging message 
was not bringing debugging insight and it was upcasting a TimeoutException 
which was preventing the on_kill hook to be triggered
   
   ### Tests
   
   > - [X] My PR adds the following unit tests __OR__ does not need testing for 
this extremely good reason:
   
   In order for a test to make sense it would need to run from within a 
Kubernetes cluster; I have tried building on top of the Docker image given in 
Contributing, adding postgres resources to be launched in a local kubernetes 
cluster, mounting the Airflow repo as a hostVolume, running `pip install -e` 
but the started KubernetesPods also needs a built image in order to run so I 
hit a wall there. (But even before hitting that wall I had created quite a big 
README at that point already)
   
   Maybe we can have a chat on how to test this properly, I didn't see any test 
in the codebase using `in_cluster=True` so far.
   
   Here's what I have attempted to do 
https://github.com/dmateusp/incubator-airflow/tree/AIRFLOW-3822_test
   
   ### Commits
   
   > - [X] My commits all reference Jira issues in their subject lines, and I 
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 
message](http://chris.beams.io/posts/git-commit/)":
     1. Subject is separated from body by a blank line
     1. Subject is limited to 50 characters (not including Jira issue reference)
     1. Subject does not end with a period
     1. Subject uses the imperative mood ("add", not "adding")
     1. Body wraps at 72 characters
     1. Body explains "what" and "why", not "how"
   
   ### Documentation
   
   > - [X] In case of new functionality, my PR adds documentation that 
describes how to use it.
     - 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
   
   Corrects a bug rather than creating a new feature
   
   ### Code Quality
   
   > - [X] Passes `flake8`
   

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