Compress error when exporting course

Site Operators Tutor Help
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1

Hello, I encountered the following error when I tried to export a course using minio plugin on a k8s deployment:

image
image1593×595 92.1 KB

Compressing error: {‘raw_error_msg’: “An error occurred (InvalidPart) when calling the CompleteMultipartUpload operation: One or more of the specified parts could not be found. The part may not have been uploaded, or the specified entity tag may not match the part’s entity tag.”}

The error only occurred for a particular course. I had no problem exporting other courses. Anyone knows what’s the cause of this issue?

2

Hello, so I conducted an investigation and discovered that the error is caused by a particular image that was uploaded within the course.

The original dimensions of the image are: 1234 x 644
Width: 1234 pixels
Height: 644 pixels

After deleting and re-uploading the image with smaller dimensions: 1021 x 533
Width: 1021 pixels
Height: 533 pixels

The error has disappeared. I’m just wondering if there are any limitations regarding image dimensions on Minio’s end? :thinking:

3

@FahadKhalid210 Thoughts on this?

4

There are no image dimension limitations in Minio. We can upload even larger images and successfully export courses without any issues.

5

Is there an overall limit? The successfully imported course contains 71 static files.

Update: After resizing the problematic image, I managed to export successfully. However, as additional images were subsequently added to the course (regardless of their dimensions), exporting the course resulted in the same multipart error. I attempted to work from the exported checkpoint and import it, but encountered the same multipart error, preventing the course from being imported as well.

6

There are some limits, but none that seem to apply to your situation:

https://min.io/docs/minio/linux/operations/concepts/thresholds.html

9

Hi @wnnlyy,

May I know how is your configuration for MinIO in tutor config.yml? GitHub - overhangio/tutor-minio: This is a plugin for Tutor that provides S3-like object storage for Open edX platforms.

Thank you

10

Hi @wnnlyy,

I would like to report my test case on Palm 16.1.8 and Quince 17.0.2 in Azure K8S with tutor-minio and with tutor-contrib-s3.

[1] Using Quince 17.0.2 with tutor-minio, with a nearly public access setting in Azure Storage, cms import / export course and lms instructor generate report, not working and error logs found.

[2] Using Palm 16.1.8 still with tutor-minio, Azure Storage remain unchange, lms instructor able to generate report. cms import / export course same error as [1]

[3] Using Quince 17.0.2 with tutor-contrib-s3, AWS S3, lms instructor able to generate report. cms import / export course task keep-going and never end, but the tar.gz file found in AWS S3 and no error logs found in cms

@wnnlyy, I hope my case can help to answer your question “Is it recommended to upgrade my Tutor version from Palm to Quince?”

Thank you!

11

Deleted my previous posts as I finally had time to find out the reason. The multipart error issue is indeed due to Azure Storage. When I tried importing/exporting a course using MinIO as a container pod, there were no problems with the process.