static void addRepairRequestForDelete(RepairRequestsDb db, DataNodeId sourceNode, BlobId blobId, long operationTime)
      throws Exception {
    RepairRequestRecord record =
        new RepairRequestRecord(blobId.toString(), (int) blobId.getPartition().getId(), sourceNode.getHostname(),
            sourceNode.getPort(), RepairRequestRecord.OperationType.DeleteRequest, operationTime, (short) -1, 0);
    db.putRepairRequests(record);
  }
Test the background RepairRequestsSender and the repair requests handlers.
ambry-test-utils/src/main/java/com/github/ambry/server/ServerTestUtil.java