Maximilian Michels created FLINK-4261:
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             Summary: Setup atomic deployment of snapshots
                 Key: FLINK-4261
                 URL: https://issues.apache.org/jira/browse/FLINK-4261
             Project: Flink
          Issue Type: Bug
          Components: Build System, release
            Reporter: Maximilian Michels
            Assignee: Maximilian Michels
             Fix For: 1.1.0


Users have reported that our nightly snapshots become inconsistent from time to 
time. This happens when the upload to the snapshot repository fails during the 
deployment process. Maven doesn't support atomic deployment but deploys 
artifacts one after another, directly after installing them in the local 
repository. If the build fails at any time, no changes are rolled back. 

This problem has been solved for Nexus repositories. For releases, we already 
take advantage of atomic deployments using staging repositories. Nexus 
repositories support this even without using a special Maven plugin. 

For releases, we have to use the Web UI to close and release staging 
repositories. For snapshots this should be automated. Most importantly, the 
changes shouldn't alter anything for our release process.

I suggest to use the {{nexus-staging-maven-plugin}} which essentially replaces 
the standard maven deploy plugin. It can be setup to auto-close and 
auto-release snapshots staging repositories. For releases, it will be setup to 
never auto-close nor auto-release which keeps our existing release process.



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