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tikv: improve the note for s3-multi-part-size (#23362) #23366

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ti-chi-bot merged 6 commits into from
Jul 28, 2026
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tikv: improve the note for s3-multi-part-size (#23362) #23366

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c11e847
Improve note.
ginkgoch Jul 27, 2026
3cfe309
Update ref.
ginkgoch Jul 27, 2026
395f58d
Apply suggestion from @3pointer
ginkgoch Jul 28, 2026
14737e8
Update tikv-configuration-file.md
qiancai Jul 28, 2026
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Update tikv-configuration-file.md
qiancai Jul 28, 2026
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Update tikv-configuration-file.md
qiancai Jul 28, 2026
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2 changes: 1 addition & 1 deletion tikv-configuration-file.md
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Expand Up @@ -2422,7 +2422,7 @@ Configuration items related to BR backup.

> **Note:**
>
> This configuration is introduced to address backup failures caused by S3 rate limiting. This problem has been fixed by [refining the backup data storage structure](/br/br-snapshot-architecture.md#structure-of-backup-files). Therefore, this configuration is deprecated from v6.1.1 and is no longer recommended.
> This configuration item was introduced to address backup failures caused by S3 rate limiting. Starting from TiDB v6.1.1, configure this value with caution. Setting it too large might cause large upload parts to fail or time out when the network is unstable.

+ The part size used when you perform multipart upload to S3 during backup. You can adjust the value of this configuration to control the number of requests sent to S3.
+ If data is backed up to S3 and the backup file is larger than the value of this configuration item, [multipart upload](https://docs.aws.amazon.com/AmazonS3/latest/API/API_UploadPart.html) is automatically enabled. Based on the compression ratio, the backup file generated by a 96-MiB Region is approximately 10 MiB to 30 MiB.
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