fubinzh

CDC initial scan are not parallel well

1

### What did you do? 1. Deploy TiDB cluster with 2 CDC nodes. TiKV configuration cdc.incremental-fetch-speed-limit = 300MiB, dc.incremental-scan-speed-limit = 96MiB. 2. Start cdc changefeed and pause it. ``` [root@tc-ticdc-0...

kafka consumer hangs sometimes

1

### What did you do? 1. run kafka consumer to consumer kafka messages received from cdc ### What did you expect to see? consumer should not hang ### What did...

resolved ts stucks for 2 hours when upgrade cluster from v7.1.4 to master

2

### What did you do? 1. Upgrade a TiDB cluster from v7.1.4 to v8.0, cluster with titan on. cluster size: 84TB, 27 TiKV, 3 CDC node. 2 changefeed running replicating...

CDC panic: unlocking a not locked range

2

### What did you do? 1. Deploy TiDB cluster with 6 TiKV and 2 CDC 2. Stop GC 3. Create blackhole changefeed and pause it 4. Run workload for several...

update of changefeed configiration changefeed-error-stuck-duration not working

5

### What did you do? 1. creaet an kafka changefeed with default configuration (changefeed-error-stuck-duration default 30m) 2. pause and update changefeed, set changefeed-error-stuck-duration to 90m 3. resume changefed 4. Inject...

lots of logs and cdc panic during tikv rolling restart

4

### What did you do? 1. pd.enable-forwarding = true is configured 2. trigger tikv rolling restart by edit tikv spec (before that, tikv-2 was pending for 10+ hours due to...

Exec command timeout on cdc node sometimes

3

### What did you do? Run cdc redo log system test cases, for each case basically below steps included: 1. create changefeed with redo log enabled 2. run workload 3....

CDC OOM when sysbench prepare 1000 table (100000 rows) when redo is on

5

### What did you do? 1. TiDB cluster with 3 CDC (2C 16G) 2. Create mysql sink changefeed with redo on ``` bash-5.1# /cdc cli changefeed --server http://127.0.0.1:8301 query -c...

CDC kvclient panic: runtime error: invalid memory address or nil pointer dereferenc

2

### What did you do? 1. Deploy TiDB cluster with 6 TiKV and 2 CDC 2. Stop GC 3. Create blackhole changefeed and pause it 4. Run workload for several...

changefeed stucks when there are 100 changefeed and restarting PD

4

### What did you do? 1. TiDB cluster deployed in GCP GKE env, with 24 TiKV (16c64g) and 9 CDC node (16c64g), cluster size ~40TB. 3 workload running, one workload...