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diff --git a/ext/lmdb-safe/lmdb-typed.hh b/ext/lmdb-safe/lmdb-typed.hh
index 0e837a60913ea26c6bf81252debf3086b3b8fb2a..a0845273b397a0e27afc712575d0a790b42a2276 100644 (file)
--- a/ext/lmdb-safe/lmdb-typed.hh
+++ b/ext/lmdb-safe/lmdb-typed.hh
@@ -164,6 +164,7 @@ struct LMDBIndexOps
 
     MDBOutVal currentvalue;
 
+    // check if the entry already exists, so we don't uselessly bump the timestamp
     if (txn->get(d_idx, combined, currentvalue) == MDB_NOTFOUND) {
       txn->put(d_idx, combined, empty, flags);
     }