func (b *batchFuture) Respond(index uint64, err error) {
	b.index = index
	b.err = err
	close(b.doneCh)
}
// Respond is used to unblock the future
Respond is used to unblock the future
// Respond is used to unblock the future
func (b *batchFuture) Respond(index uint64, err error) {
	b.index = index
	b.err = err
	close(b.doneCh)
}
func ( b * batchFuture ) Respond ( index uint64 , err error ) { b . index = index b . err = err close ( b . doneCh ) }
Respond is used to unblock the future
Respond is used to unblock the future