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"Recursive Print Statement" with Nodelets

asked 2011-05-18 08:31:00 -0500

mkoval gravatar image

I have recently converted a few of my nodes to nodelets to take advantage of zero-copy message passing. Even though I have converted all of the standard ROS logging macros (e.g. ROS_ERROR()) to the nodelet-aware equivalents (e.g. NODELET_ERROR()), I get the following warning printed to my terminal:

Warning: recursive print statement has occurred. Throwing out recursive print.

After this message prints it appears that the logging macros cease to function. Has anyone else encountered this message when using nodelets? How can I fix it?

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answered 2011-05-18 11:26:24 -0500

Brian Gerkey gravatar image

updated 2011-05-19 03:06:14 -0500

There are open tickets on this issue:

The first ticket includes some suggested workarounds. My understanding is that this problem still exists and needs to be fixed.

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Thanks for the link. Switching from using standalone nodelets to using a manager fixed the problem.
mkoval gravatar image mkoval  ( 2011-05-18 12:10:18 -0500 )edit

answered 2011-06-13 08:46:14 -0500

I get this warning frequently in Diamondback, even when not using nodelets.

I put up with it for a while, but it started to affect my log sizes so I disabled the warning with a bad workaround:


comment out lines 490, 491, and 562, 563... definitely not the correct fix but it silences the warning and now I actually get the real ROS_WARN/ROS_INFO messages that I was expecting.

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Asked: 2011-05-18 08:31:00 -0500

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Last updated: Jun 13 '11