2576625 - Writer connection stays alive forever, Coordinator connection stuck in sp_iqmpxglobalricheck

On a writer, a user cancelled a request and disconnected, but the connection could still be seen in sp_iqconnection.
This connection remained alive over 1 day after the user disconnected .
On the coordinator, the transaction version V caused by this "still alive" connection, has a size of several Tb.

The Connhandle C matching the version V can be found with sp_iqtransaction run  on the coordinator.

With the zrlog enabled on the coordinator, Connhandle C is found running sp_iqmpxglobalricheck forever.

SAP IQ 16.0

 CR812315, CR#812315, 812315, Multiplex, MPX, transaction, version , KBA , BC-SYB-IQ , Sybase IQ , Bug Filed