[skip ci]Add comments in chap09_data_coord.md (#11055)

Signed-off-by: N ruiyi.jiang <ruiyi.jiang@zilliz.com>

[skip ci]Add comments in chap09_data_coord.md (#11055)
Signed-off-by: N ruiyi.jiang <ruiyi.jiang@zilliz.com>
5e3f36d3 · ryjiang · GitHub · 6149d53e · 5e3f36d3
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docs/developer_guides/chap09_data_coord.md docs/developer_guides/chap09_data_coord.md +1 -0

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--- a/docs/developer_guides/chap09_data_coord.md
+++ b/docs/developer_guides/chap09_data_coord.md
@@ -22,6 +22,7 @@ type DataCoord interface {
 	GetSegmentInfoChannel(ctx context.Context) (*milvuspb.StringResponse, error)
  // GetCollectionStatistics requests collection statistics
 	GetCollectionStatistics(ctx context.Context, req *datapb.GetCollectionStatisticsRequest) (*datapb.GetCollectionStatisticsResponse, error)
+  // GetParititonStatistics requests partition statistics
 	GetPartitionStatistics(ctx context.Context, req *datapb.GetPartitionStatisticsRequest) (*datapb.GetPartitionStatisticsResponse, error)
 	GetSegmentInfo(ctx context.Context, req *datapb.GetSegmentInfoRequest) (*datapb.GetSegmentInfoResponse, error)
 	GetRecoveryInfo(ctx context.Context, req *datapb.GetRecoveryInfoRequest) (*datapb.GetRecoveryInfoResponse, error)