checkpoint

type:
Either operatorDriven or void periodic (float64 seconds)
examples:
config checkpoint : operatorDriven;
config checkpoint : periodic(10.0);
description:
There are two possible subconfigs, which are mutually exclusive.
automatic:
The periodic subconfig specifies the interval, in seconds, at which operator instance saves its state for fault recovery. The value must be > 0.
manual:
The operatorDriven subconfig specifies that the operator checkpoints itself by calling the checkpoint API.
default:
never
where:
any operator invocation or composite operator.