Comments (3)
disksing
commented on August 23, 2024
The leader peer in a region will report HeartBeat to pd, so pd can know how many leaders in a store.
Does it mean that we have to cache all regions in memory? Will the data become too big?
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siddontang
commented on August 23, 2024
Yes, but don't worry, the memory can't become too huge.
Btw, we can introduce boltdb or other db to cache if we really meet the memory problem.
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disksing
commented on August 23, 2024
How to determine to transfer a leader from one store to another? E,g, store 1 has 100 leaders, but 2 has only 1, we may know that we should transfer some leaders from 1 to 2.
If we know that we should do from 1 to 2, how to select the region leaders? Random is ok?
Maybe we could evaluate time cost of each region on tikv and sync it to pd server.
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Related Issues (20)
- pd panicked during jepsen tests
- non-default keyspace groups use the same timestamp path by mistake
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- Keyspace GC Safepoint interface
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