Committer's Guide

Information for official Apache Parquet committers.

Setting up your email account

Once your Apache ID has been set up you can configure your account and add ssh keys and setup an email forwarding address at

http://id.apache.org

Additional instructions for setting up your new committer email can be found at

http://www.apache.org/dev/user-email.html

The recommended setup is to configure all services (mailing lists, JIRA) to send emails to your @apache.org email address.

Creating a gpg key for releases

In order to create a release candidate you will need a gpg key published to an external key server and that key will need to be added to our KEYS file as well.

Create a key:
```
        gpg --gen-key
```

Add your gpg key to the Apache Parquet {format,mr,cpp} KEYS file:

        git clone git@github.com:apache/parquet-cpp.git
        (gpg --list-sigs <KEY ID> && gpg --armor --export <KEY ID>) >> KEYS
        git add KEYS && git commit -m "Adding gpg key for <APACHE ID>"
        ./rbt post -o -g

Publish the key to an external key server:

        gpg --keyserver pgp.mit.edu --send-keys <KEY ID>

Update the changes to the KEYS file to the Apache Parquet svn dist locations listed below:

        https://dist.apache.org/repos/dist/dev/parquet/KEYS
        https://dist.apache.org/repos/dist/release/parquet/KEYS

Add your key to git config for use with the release scripts:

        git config --global user.signingkey <KEY ID>

Creating a release

The following will guide you through the steps to create a release candidate, vote, and finally an official Apache Parquet C++ release. Before starting your gpg key should be in the KEYS file and you must have access to commit to the dist.a.o repositories.

Ensure that all issues resolved for this release candidate are tagged with the correct Fix Version in JIRA, the changelog script will use this to generate the CHANGELOG in step #2. To assign the fix version:
- Look up the previous release date.
- Query all issues resolved after that release date: project = PARQUET AND status in (resolved, Closed) and fixVersion is empty and resolutiondate >= "YYYY/MM/DD"
- In the upper right corner of the query result, select Tools > Bulk Edit.
- Select all issues > edit issue > set ‘Change Fix Version/s’ to the release version.
- Make sure to uncheck ‘Send mail for this update’ at the bottom.
Prepare RELEASE-NOTES.md for the release. This just boils down to removing the “(Not yet released)” suffix from the impending release.
Create a release candidate. This will automatically update the CHANGELOG and commit it, create a branch and update the current version within the trunk. To create a minor version update and publish it run
```
        ./dev/release/release-candidate -l m -p
```
Update, if necessary, the draft email created from the release-candidate script in step #2 and send the [VOTE] email to the dev@ mailing list. You can verify the release signature and checksums by running
```
        ./dev/release/verify-release-candidate
```
Wait for the vote to complete. If the vote fails close the vote by replying to the initial [VOTE] email sent in step #3 by editing the subject to [RESULT][VOTE] ... and noting the failure reason (example here). You'll also need to manually revert the commits generated by the release candidate script that incremented the snapshot version and updated the changelog. Once that is done, now address any issues and go back to step #1 and run again, this time you will use the -r flag to increment the release candidate version. This will automatically clean up the release candidate rc0 branch and source distribution.
```
        ./dev/release/release-candidate -l m -r 1 -p
```
Once the vote has successfully passed create the release

IMPORTANT: make sure to use the correct release at this final step (e.g.: -r 1 if rc1 candidate has been voted for). Once the release tag is pushed it will be very hard to undo due to remote git pre-receive hook explicitly forbidding release tag manipulations.

           ./dev/release/release

Update the draft email created fom the release script in step #5 to include the Apache ID's for all binding votes and send the [RESULT][VOTE] email to the dev@ mailing list.