when using column families data did not persist on disk

Hi,

I'm new to rocksdb and currently exploring one, so maybe I'm missing some basic options.

When I use the default column family all works as expected so far: I can put/merge/delete keys/values using the batch API.

But when I try to create (and then open db with cf) a new column family, I can merge/get while db is open but as soon as db closed data is lost. I have tried to use in_memory_mode, false but no effect.

many thanks for your help.