 -Save/Master support   -The executor receives a list of slaves that can be used if the master mode is activated, and the current node is not a slave, there for, the master.   -Slave and Master handlers that synchronize the execution   -So that slave and master are equal, the items are read through the database and not received by parameter.
 -Save/Master support
  -The executor receives a list of slaves that can be used if the master mode is activated, and the current node is not a slave, there for, the master.
  -Slave and Master handlers that synchronize the execution
  -So that slave and master are equal, the items are read through the database and not received by parameter.

-Controller
  -To avoid the loss of results, when the database stops, or in case of some non critical error, there is now a controller thread that can receive a kill message.
  -The client receives an interrupt message and exits.

-The client shows now better output to show progress

PedroGomes/TPCw-benchmark