Data integrity
GBASE 8A MPP Cluster's multi-sharding and multi-replica mechanism GBASE 8A MPP Cluster uses a multi-replica redundancy mechanism to ensure the high availability of the cluster. The table data in the cluster is divided into multiple shards and stored on different nodes, each shard can provide 1 or more replica data redundancy, the number of replicas and shards in the cluster can be flexibly configured, the replicas can be configured to be sharded to any node of the cluster, and more primary and replicas can be allocated to nodes with high host performance and large storage space according to the configuration.
Data is automatically synchronized between the primary replicas.
The gbase general multi-replica redundancy mechanism can reduce the barrel effect of node failure.
When a data node fails, the system automatically switches to its replica data node to ensure business continuity.
gbase supports the deployment of active-active clusters.
gbase 8a mpp cluster automatic switching mechanism node failure is transparent to the application, will not interrupt the business being executed, can evenly distribute the load of the abnormal server on several normal servers where the replica is located, once the failed node service returns to normal, gbase 8a mpp cluster failed node will synchronize from other full replica nodes to recover the node data, and provide services immediately after the recovery is completed, This minimizes performance jitter due to the barrel effect after failover.
Backup and Restoration GBASE 8A MPP Cluster provides a dedicated backup and recovery tool (GCRCMAN) that allows users to easily backup and restore data in the entire cluster, prevent data loss or damage from adversely affecting users' services, and ensure that the system can be quickly restored in abnormal situations.
The gbase general backup and recovery tool is automatically installed in the $gcluster base server bin directory with the installation of the cluster.
gbase 8a MPP Cluster provides full backup, incremental backup, full recovery, and incremental recovery at the cluster, database, and table levels based on your business requirements.
Gbase 8A MPP Cluster also supports data backup and recovery with Hadoop, backing up data in the database to Hadoop, or restoring data files in Hadoop to the database.