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Catch up logs is too slow when region is idle #6670

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BusyJay opened this issue Feb 21, 2020 · 0 comments · Fixed by #7285
Closed

Catch up logs is too slow when region is idle #6670

BusyJay opened this issue Feb 21, 2020 · 0 comments · Fixed by #7285
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severity/major sig/raft Component: Raft, RaftStore, etc. type/bug The issue is confirmed as a bug.

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@BusyJay
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BusyJay commented Feb 21, 2020

When the region is idle, leader sends logs to followers only when there is a heartbeat response. TiKV is configured to send a heartbeat about every 2 seconds, which can be too slow for catching up logs.

etcd-io/etcd#9985 fixes that by making append more aggressively.
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severity/major sig/raft Component: Raft, RaftStore, etc. type/bug The issue is confirmed as a bug.
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*: update raft-rs to use aggressive flow control BusyJay/tikv
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