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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`


### Incomplete Multipart uploads
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The S3 Sink Connector uploads the files using the S3 Mutli part upload API for improved performance and handling large file sizes.
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Occasionally the API can throw an exception or the connector can fail to complete a multipart upload.
This can leave "Parts" of the multipart upload on S3 waiting to complete taking up unnecessary space.
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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/].
Or 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]
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## Development

### Developing together with Commons library
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