@Override
  public String toString() {
    return "{records-written: " + recordsWritten + ", records-size: "+ recordsSize + ", committed-transactions: " +
      committedTransactions + ", aborted-transactions: " + abortedTransactions + ", auto-flushes: " + autoFlushCount +
      ", metastore-calls: " + metastoreCalls
        + ", created-partitions: " + createdPartitions
        + ", total-partitions: " + totalPartitions + " }";
  }
Increment by delta the total partitions.
@param delta to increment by.
streaming/src/java/org/apache/hive/streaming/ConnectionStats.java