Adopt OpenJDK - Lessons learned and Where we're going (FOSDEM 2013)

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This talk is about the the Adopt OpenJDK programme

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Adopt OpenJDK - Lessons learned and Where we're going (FOSDEM 2013)

  1. 1. Adopt OpenJDKWhat weve learned &Where were goingMartijn Verburg (@karianna)Ben Evans (@kittylyst) 1 Slide Design by Kerry Kenneally http://www.kerrykenneally.com
  2. 2. We are pleased to have a legal slide! This work and content is licensed underCreative Commons Attribution-Non Commercial-Share Alike 3.0 Unported License 2
  3. 3. Like last year - why were partly here... 3
  4. 4. How this talk is going to work• This is a fact!• This is an opinion – We will not poke fun at large corporations• Two sections: – What weve learned (A bit of whining) – Where were going (What were hoping to do about it) 4
  5. 5. What is the Adopt OpenJDK program?• A JUG lead initiative to improve participation in OpenJDK• A programme to help improve OpenJDK workflow• An advocacy programme 5
  6. 6. What is its relationship with OpenJDK• A feeder programme of ideas and talent• A mentoring and educational incubator• An place to prototype new social/community workflow ideas• Early feedback mechanism
  7. 7. What is its relationship with OpenJDK• An area to try some small technical ideas• An area to work with casual as well as full-time participants• Ideas and tech will shift to the OpenJDK on merit – Usual OpenJDK rules apply
  8. 8. What weve learned 8
  9. 9. Developers love the idea of OpenJDK• Developers are hugely keen to get involved• They want to help the platform that has given them so much• There is often real significant contributors hiding away, e.g. – Mutability detector – Research from Cambridge University, UK – Working build-infra builds on all major platforms – Richard Warburton & Jim Gough on JSR-310 9
  10. 10. Hackdays are the best way to educate• Hosting hackdays has been very successful – ~10 were held in 2012• In 2-3 hours, 20-30 developers can get started on OpenJDK – This propagates through conferences and JUGs• Richard can explain how Lambdas and Date/Time went 10
  11. 11. Developers are scared of OpenJDK• They think only Rocket Scientists need apply – They think you need advanced C/C++/Assembler skills – Charlie doesnt help ;-)• They are scared to make public contributions• They are scared they will break something – Lack of access to (open) tests 11
  12. 12. Developers are surprised at the helpfulness• OpenJDK has somewhat of a surly reputation – Several well meaning technologists who have their ideas rejected – Oracle staff are often buy on internal deadlines• Most OpenJDK projects have a very welcoming attitude – This needs to be publicised more 12
  13. 13. Developers cant build OpenJDK easily• Even with build-infra - its a barrier to entry• Lack of IDE support• make is an unfamiliar build tool for many• Developers guide is out of date 13
  14. 14. Developers cant test OpenJDK easily• Even with jtreg improvements - its a barrier to entry – TestNG support is very welcome• Lack of access to complete (open) tests• Lack of alternative test platforms• Lack of CI 14
  15. 15. Developers want to code socially• They are used to GitHub/BitBucket• They are used to collaborative code review• They are used to open issue trackers• They used to UI/Ux which leads them to information 15
  16. 16. Developers want to code socially• They are used to ideas/designs being discussed more fully – JEP system whilst seemingly fair is causing frustration• They are used to fairly consistent technical standards – OpenJDK projects all have their own 16
  17. 17. Developers struggle to submit code• Many branches/forests/trees confuse them• webrev is a major hurdle – Patch turnaround times are slow for external contributors 17
  18. 18. Where were going 18
  19. 19. Developers love the idea of OpenJDK• Were promoting the living daylights out of OpenJDK• 4 new dedicated LJC advocates• A new Brazil-wide programme launched by SouJava• 20+ hackdays planned globally in 2013 19
  20. 20. Hackdays are the best way to educate• 20+ hackdays planned globally in 2013• All major conferences to hold them – Arranged via the JUG Leaders and Java Champions programme• Hackday materials to be shared on GitHub• LJC Advocates working on Chef/Vagrant builds 20
  21. 21. Developers cant build OpenJDK easily• 5+ JUGs combining to product build instructions – For all major platforms• build-infra friendly IDE build instructions being worked on• chef/vagrant/shell scripts to simply builds 21
  22. 22. Developers cant test OpenJDK easily• Testfest planned with IBM and Oracle et al – TestNG tests will be written• Gentlepersons agreement at Devoxx to open up tests – Oracle, IBM, RedHat, Azul et al• Initial discussions around a secure distributed build farm – Cloudbees willing to donate free compute time/space for this 22
  23. 23. Developers cant test OpenJDK easily• Programme planned to involve JVM F/OSS projects for testing – When M7 is released – Needs infrastructure?• Global test hackdays to co-ordinate testing and results – TBA 23
  24. 24. Developers want to code socially• AdoptOpenJDK GitHub – For collaborative code review• LJC is now incorporated – Bank A/C will be opened and funds secured – Global JUG non-profit corporation?• Adopt OpenJDK will host build platforms, chef-server etc 24
  25. 25. Developers struggle to submit code• Adopt OpenJDK will investigate a living visualisation of forests – TBA• Adopt OpenJDK will host a webrev service – Allows irregular contributors a way to submit patches 25
  26. 26. Thanks for listening!• Need to get in touch? – Adopt OpenJDK (@adoptopenjdk) – Ben Evans (@kittylyst) – Martijn Verburg (@karianna) – Richard Warburton (@richardwarburto)• http://adoptopenjdk.java.net 26

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