How to plan for a shortest path using MoveIt?

edit

Hi,

When i am trying to execute a goal in MoveIt, i could see MoveIt resulting in longer trajectories most of the time.

Without MoveIt in picture, I am able to execute shortest trajectory by giving only the shortest path computed (i.e. only goal joints positions) to actionClient "/arm/joint_trajectory_controller/follow_joint_trajectory" using actionlib.

I am trying to do the same using MoveIt. I also tried by giving the computed shortest path (goal joint position) using below code, but unexpectedly MoveIt again is planning a trajectory(set of points-path) for the same and it resulted in long trajectories again.

group_variable_values = group.get_current_joint_values()
group_variable_values[0] = -1.57
group_variable_values[1] = 1.0
group_variable_values[2] = 0.35
group_variable_values[3] = 0.567
group_variable_values[4] = 0.0
group_variable_values[5] = 2.2
group.set_joint_value_target(group_variable_values)
group.go(wait=True)

So can any one help me in finding and providing shortest trajectory for goal execution using MoveIt.

Thanks in advance.