feat(region_cache): sync leader store epoch when switchWorkLeaderToPeer (#573)

Ryan-Git · web-flow · commit 8c1802b0f6eb · 2022-09-07T12:46:50.000+08:00
Signed-off-by: renhongdi &lt;ryan.hd.ren@gmail.com&gt;
diff --git a/internal/locate/region_cache.go b/internal/locate/region_cache.go
@@ -2073,6 +2073,7 @@ retry:
 	}
 	newRegionStore := oldRegionStore.clone()
 	newRegionStore.workTiKVIdx = leaderIdx
+	newRegionStore.storeEpochs[leaderIdx] = atomic.LoadUint32(&newRegionStore.stores[leaderIdx].epoch)
 	if !r.compareAndSwapStore(oldRegionStore, newRegionStore) {
 		goto retry
 	}

Original file line number	Diff line number	Diff line change
`@@ -2073,6 +2073,7 @@ retry:`
`2073`	`2073`	`}`
`2074`	`2074`	`newRegionStore := oldRegionStore.clone()`
`2075`	`2075`	`newRegionStore.workTiKVIdx = leaderIdx`
	`2076`	`+ newRegionStore.storeEpochs[leaderIdx] = atomic.LoadUint32(&newRegionStore.stores[leaderIdx].epoch)`
`2076`	`2077`	`if !r.compareAndSwapStore(oldRegionStore, newRegionStore) {`
`2077`	`2078`	`goto retry`
`2078`	`2079`	`}`