SingleStore DB

Ops: Aggregator Failures
Master Aggregator Dies

If the master aggregator dies and is recoverable, all that is necessary is to restart the SingleStore DB process.

If it is not recoverable, then a child aggregator must be promoted to master with AGGREGATOR SET AS MASTER.

One Child Aggregator Dies

If the aggregator is recoverable, all that is necessary is to restart the SingleStore DB process. Otherwise, simply deploy a new SingleStore DB instance as an aggregator.

Many Aggregators Die

If more than one aggregator dies, they can be reintroduced or replaced one by one.