When performing data validation with the Syncpoint feature, does adjusting the GC time of TiKV refer to the upstream or downstream?

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Original topic: Syncpoint 功能进行数据校验时,调整 TiKV 的 GC 时间,指的是上游还是下游?

| username: TiDBer_EzZC4THi

【TiDB Usage Environment】Testing
【TiDB Version】7.1.1
【Reproduction Path】
【Encountered Issue: Issue Phenomenon and Impact】
【Resource Configuration】
【Attachments: Screenshots/Logs/Monitoring】

In the last note of the official documentation 主从集群一致性读和数据校验 | PingCAP 文档中心,

  • When using the Syncpoint feature for data verification, you need to adjust the GC time of TiKV to ensure that the historical data corresponding to the snapshot is not garbage collected during verification. It is recommended to adjust it to 1 hour and restore the GC settings after verification.
    Does this refer to the upstream or downstream? I understand it as downstream. Please confirm, thank you.
| username: zhaokede | Original post link

Downstream TiKV cluster

| username: TiDBer_EzZC4THi | Original post link

Okay, thank you.

| username: xiaoqiao | Original post link

:+1: :+1:

| username: wakaka | Original post link

The image you provided is not accessible. Please provide the text you need translated.

| username: TiDBer_JUi6UvZm | Original post link

Why doesn’t the upstream need to be configured?

| username: TiDBer_JUi6UvZm | Original post link

It seems from the documentation that both upstream and downstream need to be configured.

| username: TiDBer_JUi6UvZm | Original post link

@BigFlyOnline Please confirm

| username: system | Original post link

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