Node can not start after upgrading to v6 - Error sending request to IO []: Connection closed (for request 12 on u

Issue/Introduction:

Error Message :
The following error messages may appear on the universe.log when this occurs

##################################################
|ERROR|X|IO |pid=27544.35832| u_io_callsrv_r | Error sending request to IO []: Connection closed (for request 12 on u_fecd43)

|INFO |X|IO |pid=27544.35832| IOUnhandledExceptionFilte | *** execution handler: TID=(35832)

##################################################

Patch level detected:Dollar Universe 6.2.00
Product Version: Dollar.Universe 6.2.0

Description :The Dollar Universe node stops itself after trying to start it.

Cause:

Cause type:
Defect
Root Cause: Some corrupted data has been received and writtent on the exchanger data files keeping the IO server from starting correctly.

Environment:

OS: All

Resolution:

In order to workaround the issue, please apply the following procedure in order to reinitialize the corrupted exchanger data files:

- Shutdown the Dollar Universe and check that all process are down
- Backup the exchanger data files of the impacted area (u_fecd60.dta, u_fecl60.dta)
- Reinitialize the exchanger data files of the area by executing the following commands on bin ( replace X by A,S, or I in case the issue appears on a different area):

uxrazfic u_fecd60 X
uxrazfic u_fecl60 X

- Apply an offline reorganisatio launching: unireorg
- Restart Dollar Universe

Fix Status: Released

Fix Version(s):
Component: Application.Server
Version: Dollar.Universe 6.3.21

Additional Information:

Workaround :
N/A

Node can not start after upgrading to v6 - Error sending request to IO []: Connection closed (for request 12 on u_fecd43)