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Verify consistent index is latest at the time of snapshot

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Signed-off-by: Geeta Gharpure <geetagh@amazon.com>
This commit is contained in:
Geeta Gharpure
2023-06-18 04:56:34 +00:00
parent 6f2a5b710f
commit 550aa152a7
2 changed files with 14 additions and 0 deletions
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11
server/etcdserver/server.go
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@ -1104,6 +1104,14 @@ func verifySnapshotIndex(snapshot raftpb.Snapshot, cindex uint64) {
})
}
func verifyConsistentIndexIsLatest(lg *zap.Logger, snapshot raftpb.Snapshot, cindex uint64) {
verify.Verify(func() {
if cindex < snapshot.Metadata.Index {
lg.Panic(fmt.Sprintf("consistent_index(%d) is older than snapshot index (%d)", cindex, snapshot.Metadata.Index))
}
})
}
func (s *EtcdServer) applyEntries(ep *etcdProgress, apply *toApply) {
if len(apply.entries) == 0 {
return
@ -2082,6 +2090,9 @@ func (s *EtcdServer) snapshot(snapi uint64, confState raftpb.ConfState) {
}
lg.Panic("failed to create snapshot", zap.Error(err))
}
verifyConsistentIndexIsLatest(lg, snap, s.consistIndex.ConsistentIndex())
// SaveSnap saves the snapshot to file and appends the corresponding WAL entry.
if err = s.r.storage.SaveSnap(snap); err != nil {
lg.Panic("failed to save snapshot", zap.Error(err))

3
server/etcdserver/server_test.go
View File

@ -1017,6 +1017,9 @@ func TestSyncTrigger(t *testing.T) {
// TestSnapshot should snapshot the store and cut the persistent
func TestSnapshot(t *testing.T) {
revertFunc := verify.DisableVerifications()
defer revertFunc()
be, _ := betesting.NewDefaultTmpBackend(t)
s := raft.NewMemoryStorage()