Problems encountered while during the export phase of synchronization
typically are the result of not being able to find the appropriate oplog entry.
Cannot find oplog entry syncreplica–export can
fail with a warning message about missing oplog entries.
Oplog gap detected during creation of update packet
When running syncreplica–export,
a warning that the command found a different oplog ID than expected can indicate
a serious error, involving an unrecoverable data loss.
Packets accumulate in outgoing storage bay
Problems with packet delivery are recoverable errors. In many cases,
the MultiSite automatic-retry
capability recovers from errors.
Replica cannot update itself
It is an error to specify a syncreplica–export command
in such a way that you specify the sending replica as a destination for the
exported packets.