Problem: no version in memiavl log (#1311)

* Problem: no log version in memiavl

* Apply suggestions from code review

* add doc

CHANGELOG.md

@@ -11,6 +11,7 @@
 - [#1302](https://github.com/crypto-org-chain/cronos/pull/1302) Fix concurrent map access in rootmulti store.
 - [#1304](https://github.com/crypto-org-chain/cronos/pull/1304) Write versiondb with fsync, and relax the version requirement on startup.
 - [#1308](https://github.com/crypto-org-chain/cronos/pull/1308) Update ethermint to fix duplicate cache events emitted from evm hooks and wrong priority tx.
+- [#1311](https://github.com/crypto-org-chain/cronos/pull/1311) Add missing version in memiavl log.
 
 ### Improvements
 

memiavl/db.go

@@ -204,14 +204,14 @@ func Load(dir string, opts Options) (*DB, error) {
 
 		if snapshot != currentSnapshot {
 			// downgrade `"current"` link first
-			opts.Logger.Info("downgrade current link to %s", snapshot)
+			opts.Logger.Info("downgrade current link to", "snapshot", snapshot)
 			if err := updateCurrentSymlink(dir, snapshot); err != nil {
 				return nil, fmt.Errorf("fail to update current snapshot link: %w", err)
 			}
 		}
 
 		// truncate the WAL
-		opts.Logger.Info("truncate WAL from back, version: %d", opts.TargetVersion)
+		opts.Logger.Info("truncate WAL from back", "version", opts.TargetVersion)
 		if err := wal.TruncateBack(walIndex(int64(opts.TargetVersion), mtree.initialVersion)); err != nil {
 			return nil, fmt.Errorf("fail to truncate wal logs: %w", err)
 		}
@@ -223,9 +223,9 @@ func Load(dir string, opts Options) (*DB, error) {
 			}
 
 			if err := atomicRemoveDir(filepath.Join(dir, snapshotName(version))); err != nil {
-				opts.Logger.Error("fail to prune snapshot, version: %d", version)
+				opts.Logger.Error("fail to prune snapshot", "version", version, "err", err)
 			} else {
-				opts.Logger.Info("prune snapshot, version: %d", version)
+				opts.Logger.Info("prune snapshot", "version", version)
 			}
 			return false, nil
 		}); err != nil {