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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.

Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>
This commit is contained in:
Marek Siarkowicz
2021-12-01 15:24:25 +01:00
parent 8d83691d53
commit 8f4735dfd4
12 changed files with 187 additions and 34 deletions
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2
clientv3/snapshot/v3_snapshot.go
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@@ -391,7 +391,7 @@ func (s *v3Manager) saveDB() error {
be := backend.NewDefaultBackend(dbpath)
// a lessor never timeouts leases
lessor := lease.NewLessor(s.lg, be, lease.LessorConfig{MinLeaseTTL: math.MaxInt64})
lessor := lease.NewLessor(s.lg, be, nil, lease.LessorConfig{MinLeaseTTL: math.MaxInt64})
mvs := mvcc.NewStore(s.lg, be, lessor, (*initIndex)(&commit), mvcc.StoreConfig{CompactionBatchLimit: math.MaxInt32})
txn := mvs.Write(traceutil.TODO())