MapReduce Job State: PREP over 8 hours, state no change

[Ascot Moss]

Hi,

I have submitted a mapreduce  job, and can find it from job list, however I
find its STATE is PREP over last 8 hours, any idea why it takes so long to
"PREP"?

regards



(mapred job -list)

                  JobId     State     StartTime     UserName       Queue
Priority UsedContainers RsvdContainers UsedMem RsvdMem NeededMem   AM info

 job_1470075140254_0003       PREP 1470402873895