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update the external links #5410

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Apr 21, 2021
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update the external links #5410

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4 changes: 2 additions & 2 deletions tidb-scheduling.md
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Expand Up @@ -67,7 +67,7 @@ Scheduling is based on information collection. In short, the PD scheduling compo

- State information reported by each TiKV peer:

Each TiKV peer sends heartbeats to PD periodically. PD not only checks whether the store is alive, but also collects [`StoreState`](https://github.com/pingcap/kvproto/blob/release-3.1/proto/pdpb.proto#L421) in the heartbeat message. `StoreState` includes:
Each TiKV peer sends heartbeats to PD periodically. PD not only checks whether the store is alive, but also collects [`StoreState`](https://github.com/pingcap/kvproto/blob/master/proto/pdpb.proto#L473) in the heartbeat message. `StoreState` includes:

* Total disk space
* Available disk space
Expand All @@ -79,7 +79,7 @@ Scheduling is based on information collection. In short, the PD scheduling compo

- Information reported by Region leaders:

Each Region leader sends heartbeats to PD periodically to report [`RegionState`](https://github.com/pingcap/kvproto/blob/release-3.1/proto/pdpb.proto#L271), including:
Each Region leader sends heartbeats to PD periodically to report [`RegionState`](https://github.com/pingcap/kvproto/blob/master/proto/pdpb.proto#L312), including:

* Position of the leader itself
* Positions of other replicas
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