Number of fragments that have been declared
as unrecoverably lost. This stat is incremented when
LBM_MSG_UNRECOVERABLE_LOSS or LBM_MSG_UNRECOVERABLE_LOSS_BURST is
delivered to an UM receiver callback. In the case of burst loss,
the stat is incremented by the number of fragments lost in the burst
event. This stat will not be updated for hot-failover receivers
with arrival-order delivery (i.e. option ordered_delivery set to
0). For hot-failover receivers, this stat may be updated while no
actual LBM_MSG_UNRECOVERABLE_LOSS/LOSS_BURST messages are delivered
to the application. In that case, one of the receivers underlying the
hot-failover receivers had experienced unrecoverable loss, but the other
underlying receiver was able to compensate. SMX receivers are excluded
from this stat. THIS FIELD IS UNSUPPORTED.

C# |
public long fragmentsUnrecoverablyLost()

Number of fragments unrecoverably lost. THIS FIELD IS UNSUPPORTED.