Initialize Rdb_tbl_prop_coll_factory in RocksDB for remote compaction

[Qiaolin-Yu]

I'm working for remote compaction of RocksDB, which is an experimental feature. When I try to use this feature in MyRocks, I encounter one problem.

It seems that the remote RocksDB instance can't initialize Rdb_tbl_prop_coll_factory because it needs m_ddl_manager, which can't be obtained in the RocksDB layer. Therefore, when calling the read_stats_from_tbl_props function, the SST file generated by the remote rocksdb instance does not contain some information required by MyRocks, resulting in a fatal error.

The MySQL error log is shown in the following figure. There is no error in RocksDB layer.

How could I hard code to initialize Rdb_tbl_prop_coll_factory in remote RocksDB instance for remote compaction without m_ddl_manager? Or are there other suggestions that can solve this problem？