GitHub user joshfg opened a pull request: https://github.com/apache/flink/pull/2269
[FLINK-4190] Generalise RollingSink to work with arbitrary buckets I've created a new bucketing package with a BucketingSink, which improves on the existing RollingSink by enabling arbitrary bucketing, rather than just rolling files based on system time. The main changes to support this are: - The Bucketer interface now takes the sink's input element as a generic parameter, enabling us to bucket based on attributes of the sink's input. - While maintaining the same rolling mechanics of the existing implementation (e.g. rolling when the file size reaches a threshold), the sink implementation can now have many 'active' buckets at any point in time. The checkpointing mechanics have been extended to support maintaining the state of multiple active buckets and files, instead of just one. - For use cases where the buckets being written to are changing over time, the sink now needs to determine when a bucket has become 'inactive', in order to flush and close the file. In the existing implementation, this is simply when the bucket path changes. Instead, we now determine a bucket as inactive if it hasn't been written to recently. To support this there are two additional user configurable settings: inactiveBucketCheckInterval and inactiveBucketThreshold. You can merge this pull request into a Git repository by running: $ git pull https://github.com/joshfg/flink flink-4190 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/2269.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 #2269 ---- commit 2011e47de6c8b3c087772c84b4b3e44210dbe50c Author: Josh <joshformangorn...@gmail.com> Date: 2016-07-12T17:38:54Z [FLINK-4190] Generalise RollingSink to work with arbitrary buckets ---- --- 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. ---