## Development Task - [x] a new field `txn_source` in `write_cf` https://github.com/tikv/tikv/pull/13777 - [x] event feed handles the mark `txn_source` https://github.com/tikv/tikv/pull/13796
Development Task
txn_sourceinwrite_cftxn: add a new fieldtxn_sourcein write and lock #13777txn_sourcecdc: filter out the event cause by cdc write #13796