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Documenting

Date

Authors

Joseph (Pepe) Kelly Yafang Deng

Status

Done

Summary

Jira Legacy
serverSystem JIRA
serverId4c843cd5-e5a9-329d-ae88-66091fcfe3c7
keyTIS21-4513

There was an issue processing a Placement Create bulk upload file and a number of other files were not processed until the service was restarted

Impact

Users uploaded files were not processed.

We restarted the service to “skip over” the file that was problematic.

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  • Restarted service

  • After testing the file in the stage environment, //TODO.found that it was processed there.

  • Tested the file on local, it took more than 2 hours:

    Image Added

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Timeline

BST unless otherwise stated

  • 13:55 - File uploaded and starts being processed.

  • 13:55-15:24 - Other users upload files and the large file was being processed

  • 15:24 - Error logged

  • 15:25 - User report on Teams

  • 15:10-15:37 - One of the copies of TCS, which bulk upload relies on was restarted and was busier.

  • 15:24-15:40 - Service monitored for signs that data was still being processed and once it became clear it wasn’tfinding no indication the file was being processed, the service was restarted

  • 15:53 - Service processes queued files

  • 17:29 - Admin user tried uploading the same Placement Create file again, and then it was processed successfully

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Root Cause(s)

  • When admin users raised the query, the job has already spent 1.5 hours. (12:55:51 UTC - 14:25 UTC)

  • We thought the job was stalled, but it was not. Until generic upload service was restarted, the job had been processing.

  • Below image shows the record of 1702nd row in the spreadsheet. And there’re 1788 rows in total.

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Action Items

Action Items

Comments

Owner

Lessons Learned

  • Look for logs to check if the job is really stalled… pair up whenever possible.