MinIO is a high-performance, distributed object storage system designed to handle unstructured data such as photos, videos, log files, backups, and container images. It is compatible with Amazon S3 cloud storage service and is widely used for building cloud-native applications. MinIO is known for its simplicity, scalability, and high availability, making it a popular choice for developers and enterprises looking to deploy object storage solutions.
When working with MinIO, you might encounter the InvalidPartOrder error during a multipart upload process. This error indicates that the parts of the file being uploaded are not in the correct sequence. Multipart uploads are used to upload large files by dividing them into smaller parts, which are then uploaded independently and reassembled by the server.
During a multipart upload, you may receive an error message similar to the following:
InvalidPartOrder: The list of parts was not in ascending order. The parts must be ordered by part number.
The InvalidPartOrder error occurs when the parts of a multipart upload are not uploaded in the correct order. Each part of a multipart upload is assigned a unique part number, and these numbers must be sequential and in ascending order. If the parts are uploaded out of order, MinIO will not be able to correctly assemble the final object, resulting in this error.
To resolve the InvalidPartOrder error, follow these steps to ensure that your multipart upload parts are in the correct order:
Ensure that each part of your multipart upload has a unique and sequential part number. Part numbers should start from 1 and increment by 1 for each subsequent part. For example, if you have three parts, their part numbers should be 1, 2, and 3.
When uploading parts, ensure that they are uploaded in the correct order. Use the following command to upload parts in sequence:
mc cp --attr "x-amz-meta-part-number:1" part1.txt myminio/mybucket/myobject
mc cp --attr "x-amz-meta-part-number:2" part2.txt myminio/mybucket/myobject
mc cp --attr "x-amz-meta-part-number:3" part3.txt myminio/mybucket/myobject
Once all parts are uploaded in the correct order, complete the multipart upload using the MinIO client or SDK. This will assemble the parts into a single object. Refer to the MinIO documentation for detailed instructions on completing a multipart upload.
For more information on handling multipart uploads in MinIO, you can refer to the following resources:
By following these steps and ensuring that your multipart uploads are correctly ordered, you can successfully resolve the InvalidPartOrder error and continue using MinIO for your object storage needs.
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