Exemplo n.º 1
0
func reportRegionError(e *errorpb.Error) {
	if e.GetNotLeader() != nil {
		regionErrorCounter.WithLabelValues("not_leader").Inc()
	} else if e.GetRegionNotFound() != nil {
		regionErrorCounter.WithLabelValues("region_not_found").Inc()
	} else if e.GetKeyNotInRegion() != nil {
		regionErrorCounter.WithLabelValues("key_not_in_region").Inc()
	} else if e.GetStaleEpoch() != nil {
		regionErrorCounter.WithLabelValues("stale_epoch").Inc()
	} else if e.GetServerIsBusy() != nil {
		regionErrorCounter.WithLabelValues("server_is_busy").Inc()
	} else {
		regionErrorCounter.WithLabelValues("unknown").Inc()
	}
}
Exemplo n.º 2
0
func (s *RegionRequestSender) onRegionError(ctx *RPCContext, regionErr *errorpb.Error) (retry bool, err error) {
	reportRegionError(regionErr)
	if notLeader := regionErr.GetNotLeader(); notLeader != nil {
		// Retry if error is `NotLeader`.
		log.Warnf("tikv reports `NotLeader`: %s, ctx: %s, retry later", notLeader, ctx.KVCtx)
		s.regionCache.UpdateLeader(ctx.Region, notLeader.GetLeader().GetStoreId())
		if notLeader.GetLeader() == nil {
			err = s.bo.Backoff(boRegionMiss, errors.Errorf("not leader: %v, ctx: %s", notLeader, ctx.KVCtx))
			if err != nil {
				return false, errors.Trace(err)
			}
		}
		return true, nil
	}
	if staleEpoch := regionErr.GetStaleEpoch(); staleEpoch != nil {
		log.Warnf("tikv reports `StaleEpoch`, ctx: %s, retry later", ctx.KVCtx)
		err = s.regionCache.OnRegionStale(ctx, staleEpoch.NewRegions)
		return false, errors.Trace(err)
	}
	if regionErr.GetServerIsBusy() != nil {
		log.Warnf("tikv reports `ServerIsBusy`, ctx: %s, retry later", ctx.KVCtx)
		err = s.bo.Backoff(boServerBusy, errors.Errorf("server is busy, ctx: %s", ctx.KVCtx))
		if err != nil {
			return false, errors.Trace(err)
		}
		return true, nil
	}
	if regionErr.GetStaleCommand() != nil {
		log.Warnf("tikv reports `StaleCommand`, ctx: %s", ctx.KVCtx)
		return true, nil
	}
	// For other errors, we only drop cache here.
	// Because caller may need to re-split the request.
	log.Warnf("tikv reports region error: %s, ctx: %s", regionErr, ctx.KVCtx)
	s.regionCache.DropRegion(ctx.Region)
	return false, nil
}