New experimental system property "h2.modifyOnWrite".

h2/src/main/org/h2/store/FileLock.java

@@ -251,6 +251,8 @@ public class FileLock implements Runnable {
      * @return the properties
      */
     public Properties load() {
+        IOException lastException = null;
+        for (int i = 0; i < 5; i++) {
             try {
                 Properties p2 = SortedProperties.loadProperties(fileName);
                 if (trace.isDebugEnabled()) {
@@ -258,9 +260,11 @@ public class FileLock implements Runnable {
                 }
                 return p2;
             } catch (IOException e) {
-            throw getExceptionFatal("Could not load properties " + fileName, e);
+                lastException = e;
             }
         }
+        throw getExceptionFatal("Could not load properties " + fileName, lastException);
+    }
 
     private void waitUntilOld() {
         for (int i = 0; i < 2 * TIME_GRANULARITY / SLEEP_GAP; i++) {