more synchronized in BLOBHeap (will not fix problem with Runtime-Error as reported in forum)

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5487 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/kelondro/kelondroBLOBHeap.java

@@ -200,7 +200,7 @@ public final class kelondroBLOBHeap extends kelondroBLOBHeapModifier implements
      * @return the size of the BLOB or -1 if the BLOB does not exist
      * @throws IOException
      */
-    public long length(byte[] key) throws IOException {
+    public synchronized long length(byte[] key) throws IOException {
         assert index.row().primaryKeyLength == key.length : index.row().primaryKeyLength + "!=" + key.length;
         
         // check the buffer
@@ -394,7 +394,7 @@ public final class kelondroBLOBHeap extends kelondroBLOBHeapModifier implements
         return super.keys(up, firstKey);
     }
 
-    public long length() throws IOException {
+    public synchronized long length() throws IOException {
         return super.length() + this.buffersize;
     }