feng-tao opened a new pull request #3997: [AIRFLOW-3153] send dag last_run to statsd URL: https://github.com/apache/incubator-airflow/pull/3997 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-3153 - 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. ### Description - [x] Here are some details about my PR, including screenshots of any UI changes: Lyft has been running with this pr for over an year and numerous production issues have been detected by the stats(e.g setting pageduty on the last run time if it exceeds for certain threshold). This PR adds statds logging for the DAG generation in Airflow, recording the time spent processing each file; and the last time it was processed (both as a unix timestamp and as an interval in seconds). ``` Stats.gauge('last_runtime.example_bash_operator', 1.622376) Stats.gauge('last_run.unixtime.example_bash_operator', 1512670855) Stats.gauge('last_run.seconds_ago.example_bash_operator', 0.641343) Stats.gauge('last_runtime.example_bash_operator', 1.629494) Stats.gauge('last_run.unixtime.example_bash_operator', 1512670886) Stats.gauge('last_run.seconds_ago.example_bash_operator', 0.526443) ``` Credit to original PR owner(@betodealmeida) at lyft And fix some flake8 error ### Tests - [x] My PR adds the following unit tests __OR__ does not need testing for this extremely good reason: Add stats, no need for 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. ### Code Quality - [x] Passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
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