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server: Require either cluster version v3.6 or --experimental-enable-lease-checkpoint-persist to persist lease remainingTTL

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To avoid inconsistant behavior during cluster upgrade we are feature
gating persistance behind cluster version. This should ensure that
all cluster members are upgraded to v3.6 before changing behavior.

To allow backporting this fix to v3.5 we are also introducing flag
--experimental-enable-lease-checkpoint-persist that will allow for
smooth upgrade in v3.5 clusters with this feature enabled.
This commit is contained in:
Marek Siarkowicz
2021-12-01 15:24:25 +01:00
parent eddfb4232f
commit d00e89db2e
12 changed files with 234 additions and 32 deletions
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1
server/embed/etcd.go
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@ -216,6 +216,7 @@ func StartEtcd(inCfg *Config) (e *Etcd, err error) {
ExperimentalEnableDistributedTracing: cfg.ExperimentalEnableDistributedTracing,
UnsafeNoFsync: cfg.UnsafeNoFsync,
EnableLeaseCheckpoint: cfg.ExperimentalEnableLeaseCheckpoint,
LeaseCheckpointPersist: cfg.ExperimentalEnableLeaseCheckpointPersist,
CompactionBatchLimit: cfg.ExperimentalCompactionBatchLimit,
WatchProgressNotifyInterval: cfg.ExperimentalWatchProgressNotifyInterval,
DowngradeCheckTime: cfg.ExperimentalDowngradeCheckTime,