[skip ci]Add some comments in chap09_data_coord.md (#11760)

Signed-off-by: ruiyi.jiang <ruiyi.jiang@zilliz.com>
pull/11770/head
ryjiang 2021-11-15 09:13:17 +08:00 committed by GitHub
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@ -281,6 +281,7 @@ type DataNode interface {
Component
WatchDmChannels(ctx context.Context, req *datapb.WatchDmChannelsRequest) (*commonpb.Status, error)
// FlushSegments notifies DataNode to flush the segments req provids. The flush tasks are async to this rpc, DataNode will flush the segments in the background.
FlushSegments(ctx context.Context, req *datapb.FlushSegmentsRequest) (*commonpb.Status, error)
// GetMetrics gets the metrics about DataNode.
GetMetrics(ctx context.Context, req *milvuspb.GetMetricsRequest) (*milvuspb.GetMetricsResponse, error)