fix: Don't use a reader with seeking support when no_rotate is true
#18608
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marianogappa
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Jul 18, 2024
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🤖 I have created a release *beep* *boop* --- ## [7.3.1](plugins-destination-s3-v7.3.0...plugins-destination-s3-v7.3.1) (2024-07-18) ### Bug Fixes * Don't use a reader with seeking support when `no_rotate` is true ([#18608](#18608)) ([b5e06d3](b5e06d3)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).
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Summary
Follow up to #18361.
When
no_rotate: truewe can get large files to upload and when that happens we'll be holding the whole file in memory and eventually running out of it.An example is a sync on many AWS accounts (for example 2000), even for a single table. Let's say the table data is 10MB per account, we end up with a file of 20GB.
The downside of this change is that if a sync has a single account but many tables (and
no_rotate: true), we'll run into the same issue #18361 fixed.There are workarounds for both issues (either reducing the number of accounts in the sync, or reducing the concurrency).
The best solution would be to get aws/aws-sdk-go-v2#2694 fixed (suggested solution in https://github.com/aws/aws-sdk-go-v2/compare/main...erezrokah:fix/dont_over_allocate_small_files?expand=1), but doesn't seems like it's going to happen soon.