[GENERAL] postgres MultiXact 9.3 corruption resolved but advice needed

[Yvonne Murphy]

Our application runs against postgres 9.3.9.0-2921310. We recently run into the 
dreaded ERROR:  MultiXactId 82578299 has not been created yet -- apparent 
wraparound.
We've truncated this big table. Will truncating save us from getting this error 
soon again or does this bug have nothing to do with the size of the table?
The application has also been tested against. 9.3.12 will upgrading to this 
reduce the chance of us hitting the bug until we can get the application tested 
in 9.5. thanks