GitHub user lukecwik opened a pull request: https://github.com/apache/incubator-beam/pull/317
Verify one element per window for DataflowPipelineRunner View.asSingleton Be sure to do all of the following to help us incorporate your contribution quickly and easily: - [x] Make sure the PR title is formatted like: `[BEAM-<Jira issue #>] Description of pull request` - [x] Make sure tests pass via `mvn clean verify`. (Even better, enable Travis-CI on your fork and ensure the whole test matrix passes). - [x] Replace `<Jira issue #>` in the title with the actual Jira issue number, if there is one. - [x] If this contribution is large, please file an Apache [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.txt). --- This changes the expansion of the DataflowPipelineRunner override for View.asSingleton to provide a useful error message to users if their PCollection contains more than one element per window. You can merge this pull request into a Git repository by running: $ git pull https://github.com/lukecwik/incubator-beam singleton_verify Alternatively you can review and apply these changes as the patch at: https://github.com/apache/incubator-beam/pull/317.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #317 ---- commit e423cdce40bb11b39f254828791f15b5c0490b86 Author: Luke Cwik <lc...@google.com> Date: 2016-05-10T20:02:21Z Verify one element per window for DataflowPipelineRunner View.asSingleton This changes the expansion of the DataflowPipelineRunner override for View.asSingleton to provide a useful error message to users if there PCollection contains more than one element per window. ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---