Hello guys, I've been trying to figure out differences among several parameters of RocksDBStateBackend. The confusing parameters are:
In flink-conf.yaml: 1. state.backend.fs.checkpointdir 2. state.backend.rocksdb.checkpointdir 3. state.checkpoints.dir and 4. the param *'**checkpointDataUri**'* you pass in to RocksDBStateBackend constructor in`public RocksDBStateBackend(*URI checkpointDataUri*)` This email thread <http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Clarification-on-state-backend-parameters-td11419.html> explained the first three well. But what's the 4th one for? What's its difference from others? I'd appreciate your clarification. Thanks very much! Bowen