In this blog post, we’ll look at how Percona XtraDB Cluster uses IST.
Percona XtraDB Cluster uses the concept of an Incremental State Transfer (IST). When a node of the cluster leaves the cluster for a short period of time, it can rejoin the cluster by getting the delta set of missing changes from any active node in the cluster.
This process of getting the delta set of changes is named as IST in Percona XtraDB Cluster.
Tracking IST Progress
The number of write-sets/changes that the joining node needs to catch up on when rejoining the cluster is dictated by:
- The duration the node was not present in the cluster …