Airflow 1.8.0 Alpha 1

[Bolke de Bruin]

Dear All,

On the verge of the New Year, I decided to be a little bit cheeky and to make 
available an Airflow 1.8.0 Alpha 1. We have been talking about it for a long 
time now and by doing this I wanted bootstrap the process. It should by no 
means be considered an Apache release yet. This is for testing purposes in the 
dev community around Airflow, nothing else.

The build is exactly the same as the state of master (git 410736d) plus the 
change to version “1.8.0.alpha1” in version.py.

I am dedicating quite some time next week and beyond to get a release out. 
Hopefully we can get some help with testing, changelog etc. To make this 
possible I would like to propose a freeze to adding new features for at least 
two weeks - say until Jan 15.

You can find the tar here: http://people.apache.org/~bolke/ 
 . It isn’t signed. Following versions will 
be. SHA is available.

Lastly, Alpha 1 does not have the fix for retries yet. So we will get an Alpha 
2 :-). @Max / @Dan / @Paul: a potential fix is in 
https://github.com/apache/incubator-airflow/pull/1948 
 , but your feedback is 
required as it is entrenched in new processing code that you are running in 
production afaik - so I wonder what happens in your fork.

Happy New Year!

Bolke

Airflow Github Mirror is not synchronizing

[siddharth anand]

FYI!
I've reopened my earlier JIRA issue. It looks like multiple Apache Projects
are reporting the same.
https://issues.apache.org/jira/browse/INFRA-12949

Newly merged changes won't be available to contributors/users until the
mirroring issue is fixed.

[AIRFLOW-676] Do not allow Pools with 0 slots

[siddharth anand]

https://github.com/apache/incubator-airflow/pull/1967

Hi Folks!
Would appreciate your feedback on the following pull request.

If you'd like this functionality, please provide a +1 on the PR itself.
-s