程序包 org.apache.iotdb.db.sync

Package Sync is a suite tool that periodically uploads persistent tsfiles from the sender disk to the receiver and loads them.

请参阅: 说明

程序包org.apache.iotdb.db.sync的说明

Package Sync is a suite tool that periodically uploads persistent tsfiles from the sender disk to the receiver and loads them. With merge module, synchronous update of write, update and delete operations can be synced.

On the sender side of the sync, the sync module is a separate process, independent of the IoTDB process. It can be started and closed through separate scripts.

On the receiver side of the sync, the sync module is embedded in the engine of IoTDB and is in the same process with IoTDB. The receiver module listens to a separate port. Before using it, it needs to set up a whitelist at the sync receiver, which is expressed as a network segment. The receiver only accepts the data transferred from the sender located in the whitelist segment.

Due to the IoTDB system supports multiple directories of data files, it will perform sub-tasks according to disks in every complete synchronization task, because hard links are needed in the execution process. Hard links can not be operated across disk partitions, and a synchronization task will be performed in turn according to disks.