Hi, I submit this pr [1] to fix issue [2].
The naming of base_dir is likely to mislead users that it is the parent folder of data_dirs and wal_dirs. However, they are independent. The base_dir is just responsible for the system data folder (schema, version files...), so I changed the configuration of base_dir to system_dir in iotdb-engine.properties. origin: base_dir=data new: system_dir=data/system After this, there are three independent directories in IoTDB: system_dir, data_dirs and wal_dir. [1]https://github.com/apache/incubator-iotdb/pull/1467 [2]https://issues.apache.org/jira/browse/IOTDB-790 Thanks, Yuxin Zhang
