GitHub user zentol opened a pull request: https://github.com/apache/flink/pull/6270
[FLINK-9769][rest] Clear FileUpload attribute after access ## What is the purpose of the change Prevents a resource leakage by clearing the `UPLOADED_FILES` attribute after accessing it. Previously it could happen that a handler might see the result of a file upload operation if it happened to be sharing the same channel. In this case said files were already cleaned up, leading to `FileNotFoundExceptions`. ## Verifying this change Manually verified. Submit a job via the Web UI, no exception should be logged. You can merge this pull request into a Git repository by running: $ git pull https://github.com/zentol/flink 9769 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/6270.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 #6270 ---- commit 56af2054970dc3282b28dfc8cac4b0a4142bf1ab Author: zentol <chesnay@...> Date: 2018-07-05T21:28:47Z [FLINK-9769][rest] Clear FileUpload attribute after access ---- ---