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server: Written Snapshot's to WAL contains populated ConfState.

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This will (among others) allow etcd-3.6 to not depend on store_v2 .snap files at all,
as WAL + db file will be self-sufficient.
This commit is contained in:
Piotr Tabor
2021-02-28 14:40:01 +01:00
parent fce0c192eb
commit 4d4c84e014
7 changed files with 108 additions and 46 deletions
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5
server/etcdserver/storage.go
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@@ -54,8 +54,9 @@ func NewStorage(w *wal.WAL, s *snap.Snapshotter) Storage {
// SaveSnap saves the snapshot file to disk and writes the WAL snapshot entry.
func (st *storage) SaveSnap(snap raftpb.Snapshot) error {
walsnap := walpb.Snapshot{
Index: snap.Metadata.Index,
Term: snap.Metadata.Term,
Index: snap.Metadata.Index,
Term: snap.Metadata.Term,
ConfState: &snap.Metadata.ConfState,
}
// save the snapshot file before writing the snapshot to the wal.
// This makes it possible for the snapshot file to become orphaned, but prevents