I'm pretty new to this, and I find it hard trying to make some sense from src code.
I'm trying to understand, logical decoding.
In `HEAP2` RMGR,
what does HEAP2_NEW_CID operation do?
can somebody give an example, when this type of record is written to wal files.
When logical decoding decodes this record, what it means to it.
Is it a transaction with sub-transactions, which does some ddl changes?