MVStore / transaction store: opening a store in read-only mode does no longer loop

h2/src/docsrc/html/changelog.html

@@ -39,6 +39,8 @@ Change Log
 </li>
 <li>Garbage collection of unused chunks should be faster still.
 </li>
+<li>MVStore / transaction store: opening a store in read-only mode does no longer loop.
+</li>
 </ul>
 
 <h2>Version 1.4.192 Beta (2016-05-26)</h2>

h2/src/main/org/h2/mvstore/db/TransactionStore.java

@@ -1246,6 +1246,10 @@ public class TransactionStore {
                 Object[] d;
                 d = transaction.store.undoLog.get(id);
                 if (d == null) {
+                    if (transaction.store.store.isReadOnly()) {
+                        // uncommitted transaction for a read-only store
+                        return null;
+                    }
                     // this entry should be committed or rolled back
                     // in the meantime (the transaction might still be open)
                     // or it might be changed again in a different