Key Default Type Description
state.backend.rocksdb.checkpoint.transfer.thread.num
4 Integer The number of threads (per stateful operator) used to transfer (download and upload) files in RocksDBStateBackend.
state.backend.rocksdb.localdir
(none) String The local directory (on the TaskManager) where RocksDB puts its files.
state.backend.rocksdb.options-factory
"org.apache.flink.contrib.streaming.state.DefaultConfigurableOptionsFactory" String The options factory class for RocksDB to create DBOptions and ColumnFamilyOptions. The default options factory is org.apache.flink.contrib.streaming.state.DefaultConfigurableOptionsFactory, and it would read the configured options which provided in 'RocksDBConfigurableOptions'.
state.backend.rocksdb.predefined-options
"DEFAULT" String The predefined settings for RocksDB DBOptions and ColumnFamilyOptions by Flink community. Current supported candidate predefined-options are DEFAULT, SPINNING_DISK_OPTIMIZED, SPINNING_DISK_OPTIMIZED_HIGH_MEM or FLASH_SSD_OPTIMIZED. Note that user customized options and options from the RocksDBOptionsFactory are applied on top of these predefined ones.