0002957: If batch is missing from staging on the target side, don't try

to load any other batches while waiting for the resend

symmetric-core/src/main/java/org/jumpmind/symmetric/service/impl/DataLoaderService.java

@@ -962,6 +962,7 @@ protected IDataWriter chooseDataWriter(Batch batch) {
                     incomingBatch.setStatus(Status.RS);
                     incomingBatchService.updateIncomingBatch(incomingBatch);
                 }
+                isError = true;
             } else {
                 futures.add(executor.submit(loadBatchFromStage));
             }