ekexium

variable: tidb_enable_ts_validation

4

### First-time contributors' checklist - [ ] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs-cn) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) Add...

Description of TSO - cmd and TSO - request is wrong in "Key Metrics on Performance Overview"

3

## Error Report Please answer the following questions before submitting your issue. Thanks! 1. What is the URL/path of the document related to this issue? https://docs.pingcap.com/tidb/stable/grafana-performance-overview-dashboard/#key-metrics-on-performance-overview 2. How would you...

When "failed to decode region range key" error happens, region ranges should be logged

1

When "failed to decode region range key" error happens, region ranges should be logged. Currently only the key was logged, it is hard to find the erroneous region range keys.

Delete txn scope code

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Part of pingcap/tidb#58838 Some changes that I'm not sure about: 1. Test `TestMinSafeTsFromMixed1` and `TestMinSafeTsFromMixed2` 2. `updateGlobalTxnScopeTSFromPD`

In the current codebase, client-go provides several ways to spawn background or asynchronous tasks: - builtin `go` - `kvstore.Go(func())` - `KVTxn.spawnWithStorePool` Using multiple approaches simultaneously may lead to issues such...

事务相关的 next-gen 变量/配置变更

2

## Tracking issue Update docs for TiDB X for these topcis: - `pessimistic-auto-commit` default value - `tidb_txn_assertion_level` default value - `tidb_trace_event` https://github.com/pingcap/tidb/pull/64051

locate: clamp bucket boundaries to region boundaries

1

Clamp bucket boundaries that exceed region boundaries.

region_request: log unknown region error for debugging

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## Summary - Add INFO log when `regionErrorToLabel` returns "unknown" - Logs the full error content to help identify unhandled region error types - Useful for debugging when "unknown" appears...

 We should improve the label, maybe consider giving it reasonable names

ref https://github.com/PingCAP-QE/transaction-qa/pull/92