Move_base: cannot cancel while executing recovery behavior

asked 2013-04-28 20:28:46 -0600

2284 ●40 ●71 ●78 https://github.com/corot

updated 2014-01-28 17:16:22 -0600

ngrennan
1 ●1 ●1

Hi all, I'm using move_base action client to send goals to my robot and cancel if necessary. It works fine, but I have realized that cancelGoal doesn't work while executing recovery behavior. That is, if I call cancelGoal or cancelAllGoals, the subsequent call to waitForResult doesn't return until all recovery fails. I have tried to disable recovery behavior with:

rosrun dynamic_reconfigure dynparam set move_base recovery_behavior_enabled false

Again, this doesn't returns until recovery fails (more than 2 minutes!). I suppose move_base gets somehow blocked when running recovery behavior and don't even attend reconfigure requests.

Btw, I'm using hydro-devel code navigation stack, but experienced the same with groovy package installation.

Thanks

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me have the same issue either . need to repeatly send the cancel command to stop robot from rotating around.

C3MX ( 2016-03-25 09:11:04 -0600 )edit

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answered 2013-04-29 16:36:29 -0600

joq
25443 ●181 ●256 ●408

Sounds like a bug.

Why not open a defect ticket?

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You are right; ticket #34

jorge ( 2013-05-02 03:01:26 -0600 )edit

Hello from 2016, Is this problem solved ?

C3MX ( 2016-11-13 22:46:21 -0600 )edit

Unfortunately no. A PR would be more than welcome

jorge ( 2016-11-14 03:24:12 -0600 )edit

Alright, it may takes a while to learn the nav stack from under the hood T_T. If i can archive it, i will do that PR. :D

C3MX ( 2016-11-15 05:20:13 -0600 )edit

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answered 2017-01-19 23:38:31 -0600

C3MX

150 ●3 ●8 ●12 http://resume.itutor.name/

i think i've found the solution . You can clone the move_base package , have it hacked and build by your own

in this file :
https://github.com/ros-planning/navig...

void move_base_cancel_callback(......){
 goalIsCancelled = true;
}



 //Create move_base/cancel Subscriber
   ros::Subscriber move_base_cancel_sub  = nh.subscribe<actionlib_msgs::GoalID>                                                ("/move_base/cancel",1,move_base_cancel_callback);

   while(n.ok()){
    ......    
         // Add code here
         if(goalIsCancelled){
               goalisCancelled = false;
               break; // to break the rotation infinite loop
         }       
    ......
   }

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1

This isn't terribly elegant, and it ignores all of the framework that actionlib already has in place for cancelling goals. I'd suggest that you submit this to the navigation stack as a pull request and discuss the right way to do it there.

ahendrix ( 2017-01-20 00:35:05 -0600 )edit

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Move_base: cannot cancel while executing recovery behavior

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