func (k *kvSender) sendRestartVbuckets(ap *projClient.Client,
topic string, connErrVbs []Vbucket,
restartTs *protobuf.TsVbuuid) (*protobuf.TopicResponse, error) {
logging.Infof("KVSender::sendRestartVbuckets Projector %v Topic %v %v", ap, topic, restartTs.GetBucket())
logging.LazyVerbosef("KVSender::sendRestartVbuckets RestartTs %v", restartTs.Repr)
//Shutdown the vbucket before restart if there was a ConnErr. If the vbucket is already
//running, projector will ignore the request otherwise
if len(connErrVbs) != 0 {
logging.Infof("KVSender::sendRestartVbuckets ShutdownVbuckets %v Topic %v %v ConnErrVbs %v",
ap, topic, restartTs.GetBucket(), connErrVbs)
// Only shutting down the Vb that receieve connection error. It is probably not harmful
// to shutdown every VB in the repairTS, including those that only receive StreamEnd.
// But due to network / projecctor latency, a VB StreamBegin may be coming on the way
// for those VB (especially when RepairStream has already retried a couple of times).
// So shutting all VB in restartTs may unnecessarily causing race condition and
// make the protocol longer to converge. ShutdownVbuckets should have no effect on
// projector that does not own the Vb.
shutdownTs := k.computeShutdownTs(restartTs, connErrVbs)
logging.Infof("KVSender::sendRestartVbuckets ShutdownVbuckets Projector %v Topic %v %v \n\tShutdownTs %v",
ap, topic, restartTs.GetBucket(), shutdownTs.Repr())
if err := ap.ShutdownVbuckets(topic, []*protobuf.TsVbuuid{shutdownTs}); err != nil {
logging.Errorf("KVSender::sendRestartVbuckets Unexpected Error During "+
"ShutdownVbuckets Request for Projector %v Topic %v. Err %v.", ap,
topic, err)
//all shutdownVbuckets errors are treated as success as it is a best-effort call.
//RestartVbuckets errors will be acted upon.
}
}
if res, err := ap.RestartVbuckets(topic, []*protobuf.TsVbuuid{restartTs}); err != nil {
logging.Fatalf("KVSender::sendRestartVbuckets Unexpected Error During "+
"Restart Vbuckets Request for Projector %v Topic %v %v . Err %v.", ap,
topic, restartTs.GetBucket(), err)
return res, err
} else {
logging.Infof("KVSender::sendRestartVbuckets Success Projector %v Topic %v %v", ap, topic, restartTs.GetBucket())
if logging.IsEnabled(logging.Verbose) {
logging.Verbosef("KVSender::sendRestartVbuckets \nActiveTs %v \nRollbackTs %v",
debugPrintTs(res.GetActiveTimestamps(), restartTs.GetBucket()),
debugPrintTs(res.GetRollbackTimestamps(), restartTs.GetBucket()))
}
return res, nil
}
}
