Ping Yu

Close #1349 ### Changes 1. Sort chunks by both region & chunks. 2. Remove success ranges. 3. Group batches by { regionID, regionVer } (remove `conf_ver`) to avoid group chunks...

From logs of client go, the transaction `449908170060201997` has following chunks: `[2024/05/21 03:51:06.217 +00:00] [INFO] [txn_file.go:801] ["build txn files"] [keyspaceName=ks1] [keyspaceID=1] [startTS=449908170060201997] [mutationsLen=130] [totalChunksSize=19234] [chunkIDs="[449908170073309190,449908170073309188,449908170073309187,449908170073309189,449908170073309192,449908170073309193,449908170073309194,449908170073309195,449908170073309199,449908170073309198,449908170073309201,449908170073309200,449908170073309203,449908170073309202,449908170073309204,449908170073309205,449908170073309207,449908170073309206,449908170073309208,449908170073309209,449908170073309211,449908170073309210,449908170073309212]"]` But some of them (`449908170073309190,449908170073309188,449908170073309187,449908170073309189`)...

keyspace: Asynchronously pre-allocate keyspaces

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### What problem does this PR solve? Issue Number: Close #9022 ### What is changed and how does it work? ```commit-message keyspace: Asynchronously pre-allocate keyspaces to improve startup performance (mainly...

## Enhancement Task Asynchronously pre allocate keyspaces on start up for: - Improve performance of PD start up. - Split regions for keyspaces before set the state of keyspace to...

I am occasionally running into SIGSEGV failure when heap profile is enabled. ``` MALLOC_CONF="prof:true,prof_active:false,prof_prefix:$TMPDIR/jeprof.out" ``` The stack: ``` # lldb random-bin -c core.3787780 (lldb) target create "random-bin" --core "core.3787780" Core...

TiCDC panic for "index out of range [0] with length 0" when upstream TiDB (v7.5) execute rename tables

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### What did you do? 1. Setup the upstream & downstream cluster and TiCDC. 2. Create the changefeed. 3. Execute the DDL on upstream TiDB: ```sql CREATE TABLE t1 ......

[DNM] Release-8.5-cse

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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...

### What did you do? 1. Startup the upstream & downstream TiDB cluster (cloud engine arch, with replication worker) with TiCDC. 2. Start the replication. 3. Stop the replication worker...