qupeng

Delete range less

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### What problem does this PR solve? Issue Number: close #xxx ### What is changed and how it works? ### Check List #### Tests - Unit test - Integration test...

init new workload

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Signed-off-by: qupeng

This PR adds a new RPC `ScanTxnEntries`, which is like `Scan` but retrieves `TxnEntry`s instead of Key-Value pairs.

Now the rewrite routine is triggered by size of the append log queue. If we can support to trigger rewrite routine by the garbage ratio of the append log queue,...

introduce Witness into Raft

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Signed-off-by: qupeng

### What did you do? Start a TiCDC changefeed to replicate 4K tables. And there are a lot exists data. ### What did you expect to see? _No response_ ###...

cdc: re-design delegate and downstream to support partial region subscription better

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### What is changed and how it works? Issue Number: Close #16526 What's Changed: * Refactor `Delegate` and `Downstream` to support partial subscription better: * incremental scan can be performed...

cdc: support pipelined dml

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### What is changed and how it works? Issue Number: Close #xxx What's Changed: ```commit-message ``` ### Related changes - [ ] PR to update `pingcap/docs`/`pingcap/docs-cn`: - [ ] Need...

cdc: count locks for partial subscriped regions correctly

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### What is changed and how it works? Issue Number: Close #17211 The bug is introduced in #17210 . What's Changed: ```commit-message cdc: count locks for partial subscriped regions correctly...