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Posted to issues@maven.apache.org by "Jörg Hohwiller (Jira)" <ji...@apache.org> on 2021/11/18 08:37:00 UTC
[jira] [Created] (MNG-7338) Reduce carbon footprint in CI

Jörg Hohwiller created MNG-7338:
-----------------------------------

             Summary: Reduce carbon footprint in CI
                 Key: MNG-7338
                 URL: https://issues.apache.org/jira/browse/MNG-7338
             Project: Maven
          Issue Type: Bug
            Reporter: Jörg Hohwiller


MNG-4198 was closed with a simple workaround to add {{-B}} option.
However, if you look at the real world you will notice that in travis, circle-ci, jenkins, github-actions, etc. 99% of the builds do not use it (not even by defaults from the makers of build templates) and hence 80% of the log files are pure spam and waste:
{code}
Progress (2): 0.9/2.6 MB | 160/502 kB
Progress (2): 0.9/2.6 MB | 164/502 kB
Progress (2): 0.9/2.6 MB | 168/502 kB
Progress (2): 0.9/2.6 MB | 172/502 kB
Progress (2): 0.9/2.6 MB | 176/502 kB
Progress (2): 0.9/2.6 MB | 180/502 kB
Progress (2): 0.9/2.6 MB | 180/502 kB
Progress (2): 1.0/2.6 MB | 180/502 kB
Progress (2): 1.0/2.6 MB | 184/502 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 4.1/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 8.2/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 12/196 kB 
Progress (3): 1.0/2.6 MB | 184/502 kB | 16/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 20/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 25/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 29/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 33/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 37/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 41/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 45/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 49/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 53/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 57/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 61/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 66/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 70/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 74/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 78/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 82/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 86/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 90/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 94/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 98/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 102/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 106/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 111/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 184/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 188/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 193/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 197/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 201/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 205/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 209/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 213/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 217/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 221/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 225/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 229/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 233/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 238/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 242/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 246/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 250/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 254/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 258/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 262/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 266/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 270/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 274/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 279/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 283/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 287/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 291/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 295/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 299/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 303/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 307/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 311/502 kB | 115/196 kB
Progress (3): 1.0/2.6 MB | 311/502 kB | 115/196 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 4.1/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 8.2/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 12/220 kB 
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 16/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 20/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 25/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 29/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 33/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 37/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 41/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 45/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 49/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 53/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 57/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 61/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 66/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 70/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 74/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 78/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 82/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 86/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 90/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 94/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 98/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 102/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 106/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 111/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 115/220 kB
Progress (4): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 4.1/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 8.2/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 12/53 kB 
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 16/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 20/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 25/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 29/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 33/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 37/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 41/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 45/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 49/53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 115/196 kB | 119/220 kB | 53 kB   
Progress (5): 1.0/2.6 MB | 311/502 kB | 119/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 123/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 127/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 311/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 315/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 319/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 324/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 328/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 332/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 336/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 340/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 344/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 348/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 352/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 356/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 360/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 119/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 123/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 127/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 131/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 135/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 139/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 143/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 147/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 152/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 156/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 160/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 164/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 168/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 172/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 176/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 180/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 184/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 188/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 193/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 197/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 201/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 205/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 209/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 213/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 217/220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 131/196 kB | 220 kB | 53 kB    
Progress (5): 1.0/2.6 MB | 365/502 kB | 135/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 135/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 139/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 143/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 147/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 152/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 156/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 160/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 164/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 168/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 172/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 176/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 180/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 184/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 188/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 193/196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 365/502 kB | 196 kB | 220 kB | 53 kB    
Progress (5): 1.0/2.6 MB | 369/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 373/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 377/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 381/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 385/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 389/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 393/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 397/502 kB | 196 kB | 220 kB | 53 kB
Progress (5): 1.0/2.6 MB | 401/502 kB | 196 kB | 220 kB | 53 kB
{code}

To do something good for the environment it would be awesome to change this.
There are the following options:
1. convince every individual project to change their build scripts and add {{-B}}
2. convince every CI provider to add {{-B}} to {{MAVEN_OPTS}}
3. build some magic into maven that will notice if it is running inside CI or generally headless and then enable batch mode automatically.

My few cents on these approaches:
1. never gonna work. New projects show up faster than you can fix existing ones.
2. possible but tricky
3. maybe somewhat ugly from the maven PoV but the most effective one (at least after a longer time when all CI vendors have updated to such maven version).

Input for 3.:
* Travis: {{CI=true}} - see https://docs.travis-ci.com/user/environment-variables/
* CircleCI: {{CI=true}} - see https://circleci.com/docs/2.0/env-vars/#built-in-environment-variables
* GHA: {{CI=true}} - see https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables
* Jenkins: {{CI=true}} - see https://issues.jenkins.io/browse/JENKINS-36707

So actually 3. would not be hard to do but could save a lot of waste (many many terra-bytes word-wirde again causing lots of bandwith and lots of time for humans to read logs and find the interesting spots again consuming more energy).

Could you please think about it?



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