code: boolean updateQueue(AppAggregationKey appAggKey, Table aggTable,
        JobDetails jobDetails) throws IOException {
      byte[] rowKey = aggConv.toBytes(appAggKey);
  
      Get g = new Get(rowKey);
      g.addColumn(AggregationConstants.INFO_FAM_BYTES,
          AggregationConstants.HRAVEN_QUEUE_BYTES);
      Result r = aggTable.get(g);
  
      Cell existingQueuesCell =
          r.getColumnLatestCell(AggregationConstants.INFO_FAM_BYTES,
              AggregationConstants.HRAVEN_QUEUE_BYTES);
      String existingQueues = null;
      byte[] existingQueuesBytes = null;
      if (existingQueuesCell != null) {
        existingQueues = Bytes.toString(CellUtil.cloneValue(existingQueuesCell));
        existingQueuesBytes = Bytes.toBytes(existingQueues);
      }
  
      // get details for the queue list to be inserted
      String insertQueues = createQueueListValue(jobDetails, existingQueues);
  
      // if existing and to be inserted queue lists are different, then
      // execute check and put
      if (insertQueues.equalsIgnoreCase(existingQueues)) {
        if (LOG.isTraceEnabled()) {
          LOG.trace("Queue already present in aggregation for this app "
              + existingQueues + " " + insertQueues);
        }
        return true;
      } else {
        return executeCheckAndPut(aggTable, rowKey, existingQueuesBytes,
            Bytes.toBytes(insertQueues), AggregationConstants.INFO_FAM_BYTES,
            AggregationConstants.HRAVEN_QUEUE_BYTES);
      }
    }
docs: updates the queue list for this app aggregation
  @throws IOException