[FLINK-11151] FileUploadHandler stops working if the upload directory is removed

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.2, 1.7.0
• Fix Version/s: 1.6.4, 1.7.2, 1.8.0
• Component/s: Runtime / Coordination, Runtime / REST
• Labels: pull-request-available
• Assignee: Chesnay Schepler
• Reporter: Chesnay Schepler
• Created: 13/Dec/18 13:53
• Updated: 28/Feb/19 13:29
• Resolved: 18/Dec/18 12:02

Description

A user has reported on the ML that the FileUploadHandler does not accept any files anymore if the upload directory was deleted after the cluster has been started.
A cursory glance at the code shows that it currently uses Files.createDirectory(...) to create a temporary directory for the current request to store uploaded files in.
Changing this to use Files.createDirectories(...) instead should prevent this from happening again.

Issue Links

• links to: GitHub Pull Request #7300