3174623 - Why is my data import or export task stuck in In Process status and taking a long time?

I run a data import or export task under Data Import/Export, and it stays in In Process status for a long time. The task looks stuck, and I cannot tell whether it is still running or has stopped responding.

hanging, frozen, kill a task, end a task, stop a task, never completes, taking forever, not moving, performance, consolidated,fmd, flex master data import, bulk upload, mass data load, data load slow, import performance, long running task, import taking hours, how long does an import take, not responding, no progress, timeout , KBA , BNS-ARI-CP-CORE-IEX , Core Administration Import/Export , BNS-ARI-GS-ADS , Guided Sourcing Administration , Problem