Project Management Committee Documentation

Release Procedure

  1. Generate code signing key if you do not already have one for Apache. Refer to on how to generate a strong code signing key.
  2. Add your public key to the KEYS file at the root of the source code tree.
  3. Create a new release branch, with version bumped to the next release version.
  4. git checkout -b release/0.11.0
  5. Replace all 0.11.0-SNAPSHOT in the code tree to 0.11.0-incubating.
  6. git commit -am "Prepare 0.11.0-incubating-rc1"
  7. git tag -am "Apache PredictionIO (incubating) 0.11.0-rc1" v0.11.0-incubating-rc1
  8. If you have not done so, use SVN to checkout This is the area for staging release candidates for voting.
  9. svn co
  10. Package a clean tarball for staging a release candidate.
  11. git archive --format tar v0.11.0-incubating-rc1 > ../apache-predictionio-0.11.0-incubating-rc1.tar
  12. cd ..; gzip apache-predictionio-0.11.0-incubating-rc1.tar
  13. Generate detached signature for the release candidate. (
  14. gpg --armor --output apache-predictionio-0.11.0-incubating-rc1.tar.gz.asc --detach-sig apache-predictionio-0.11.0-incubating-rc1.tar.gz
  15. Generate MD5 and SHA512 checksums for the release candidate.
  16. gpg --print-md MD5 apache-predictionio-0.11.0-incubating-rc1.tar.gz > apache-predictionio-0.11.0-incubating-rc1.tar.gz.md5
  17. gpg --print-md SHA512 apache-predictionio-0.11.0-incubating-rc1.tar.gz > apache-predictionio-0.11.0-incubating-rc1.tar.gz.sha512
  18. Create a subdirectory at the SVN staging area. The area should have a KEYS file.
  19. mkdir apache-predictionio-0.11.0-incubating-rc1
  20. cp apache-predictionio-0.11.0-incubating-rc1.* apache-predictionio-0.11.0-incubating-rc1
  21. If you have updated the KEYS file, also copy that to the staging area.
  22. svn commit
  23. Set up credentials with Apache Nexus using the SBT Sonatype plugin. Put this in ~/.sbt/0.13/sonatype.sbt. You can generate username and password tokens from ASF's Nexus instance.
publishTo := {
    val nexus = ""
    if (isSnapshot.value)
      Some("snapshots" at nexus + "content/repositories/snapshots")
      Some("releases" at nexus + "service/local/staging/deploy/maven2")

credentials += Credentials("Sonatype Nexus Repository Manager", "", "username_token", "password_token")
  1. sbt/sbt +publishSigned +storage/publishSigned +dataElasticsearch/publishSigned then close the staged repository on Apache Nexus.
  2. Wait for Travis to pass build on the release branch.
  3. Tag the release branch with a rc tag, e.g. 0.11.0-incubating-rc1.
  4. Send out e-mail for voting on PredictionIO dev mailing list.
Subject: [VOTE] Apache PredictionIO (incubating) 0.11.0 Release (RC1)

This is the vote for 0.11.0 of Apache PredictionIO (incubating).

The vote will run for at least 72 hours and will close on Apr 7th, 2017.

The release candidate artifacts can be downloaded here:

Test results of RC5 can be found here:

Maven artifacts are built from the release candidate artifacts above, and are provided as convenience for testing with engine templates. The Maven artifacts are provided at the Maven staging repo here:

All JIRAs completed for this release are tagged with 'FixVersion = 0.10.0'. You can view them here:

The artifacts have been signed with Key : YOUR_KEY_ID

Please vote accordingly:

[ ] +1, accept RC as the official 0.10.0 release
[ ] -1, do not accept RC as the official 0.10.0 release because...