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Adding information for handling S3 Sink multipart upload aborted parts #385

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Adding information for handling S3 Sink multipart upload aborted parts #385

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Adding information for handling S3 Sink multipart upload aborted parts
aindriu-aiven Jan 8, 2025
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Corrections & improvements from review
aindriu-aiven Jan 22, 2025
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8 changes: 8 additions & 0 deletions s3-sink-connector/README.md
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Expand Up @@ -625,6 +625,14 @@ There are four configuration properties to configure retry strategy exists.
- To use SSE-KMS set to `aws:kms`
- To use DSSE-KMS set to `aws:kms:dsse`


### Cleaning temporary files from failed multipart uploads
The S3 Sink Connector uploads files using the S3 multipart upload API for improved performance and handling large files.
Occasionally the API can throw an exception or the connector can fail to complete a multipart upload.
This can leave orphaned "parts" of a failed multipart upload taking up unnecessary space.
To handle these incomplete parts AWS recommends setting up a Lifecycle rule to delete old parts that weren't completed as described in this excellent (blog post)[https://aws.amazon.com/blogs/aws-cloud-financial-management/discovering-and-deleting-incomplete-multipart-uploads-to-lower-amazon-s3-costs/].
Alternatively, if you would prefer to work through the official documentation it is available (here)[https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpu-abort-incomplete-mpu-lifecycle-config.html]

## Development

### Developing together with Commons library
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