kvserver: only pause followers when holding active lease#85732
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craig[bot] merged 4 commits intocockroachdb:masterfrom Aug 10, 2022
Merged
kvserver: only pause followers when holding active lease#85732craig[bot] merged 4 commits intocockroachdb:masterfrom
craig[bot] merged 4 commits intocockroachdb:masterfrom
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Intentionally leaving this unsimplified as a purely mechanical commit. Release note: None
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tbg
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Aug 8, 2022
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Note: also still need to make sure a leader never considers itself paused. (edit: done) |
If the raft leader is not the leaseholder (which includes the case in which we just transferred the lease away), leave all followers unpaused. Otherwise, the leaseholder won't learn that the entries it submitted were committed which effectively causes range unavailability. Fixes cockroachdb#84884. Release note: None
As observed in cockroachdb#84884, an overloaded store that held leases could end up "pausing" replication traffic to itself. This (likely) had no practical effect since the leader never sends messages to itself, but it meant reporting bogus counts of paused replicas. This commit ensures that a raft leader will never pause itself. Release note: None
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erikgrinaker
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Aug 9, 2022
erikgrinaker
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If the raft leader is not the leaseholder (which includes the case in
which we just transferred the lease away), leave all followers unpaused.
Otherwise, the leaseholder won't learn that the entries it submitted
were committed which effectively causes range unavailability.
Fixes #84884.
Release note: None