Date	21 Apr 2023
Authors	Joseph (Pepe) Kelly Yafang Deng
Status	TIS21-4449 - Getting issue details... STATUS
Summary	Bulk upload page is continually refreshing and showing “the server took too long to respond“.
Impact	Users can not use Bulk upload as usual. Sometimes when bulk upload service is up for a short period of time, users are able to upload the file. Once the service is restarting, it can miss the response from other services and the file is stalled in progress.

Non-technical Description

Bulk upload service is continually restarted and bulk upload webpage is continually refreshing.

Trigger

posted in TIS Support Channel / General at 21 April 2023 09:28:59

BST unless otherwise stated

20 Apr 2023 14:03-14:36 - Several uploads with significant numbers of errors.
21 Apr 2023
21 Apr 2023 09:28 - User report that page keeps refreshing
21 Apr 2023 09:30 - Found service was running OutOfMemory. Logs didn’t give indication why. Dashboard indicated that there *may* have been an issue since the previous day.
21 Apr 2023 09:30-13:00 - Made hotfix changes to deployment configuration to capture additional information. Found a valid cause for the additional memory use. We modified the configuration to give it more resource but missed additional resource constraints.
21 Apr 2023 13:49 User report that a uploaded file was stalled. We assumed this was because the service restarted when the file was being processed.
21 Apr 2023 14:40-15:40 - Modified and monitored the service further to check that it was stable, notifying the Teams channel at 15:55.
21 Apr 2023 16:15 - Got the same issue replicated on Stage after manually uploading those 3 large files (logId: 1682001412239, 1681999967423, 1681999429355 on Prod).
21 Apr 2023 16:30 - Modified ApplicationType.errorJson column for uploaded 3 large files on Stage to a single error. And checked Stage was resolved.
21 Apr 2023

Action Items

Comments

Owner

Fix up service deployment configuration

Preferred: Move the