Hi Everyone, I am facing something strange on my HDP cluster while running Hive (Tez) queries. On queries on specific ORC tables, the YARN task corresponding to the query (1) status is RUNNING, which implies that the required RAM and CPU is succesfully allocated. But the task then keeps waiting. All mappers and reducers stays in the status PENDING (2) for a long time (20 to 30 minutes), then the query starts. I know that this issue is very specific, and I read several posts similar to this situation, but whithout finding any solution. My question is : Did anyone face this situation ? Where should I look for further information ? I already looked at hiveserver2 and hivemetastore logs but nothing special shows up. Any help on this would be very apreciated. Regards, Orlando (1) select datekey,period,count(*) from A.t group by datekey,period order by datekey,period; (2) -------------------------------------------------------------------------------- VERTICES STATUS TOTAL COMPLETED RUNNING PENDING FAILED KILLED -------------------------------------------------------------------------------- Map 1 INITED 909 0 0 909 0 0 Reducer 2 INITED 8 0 0 8 0 0 Reducer 3 INITED 1 0 0 1 0 0 -------------------------------------------------------------------------------- VERTICES: 00/03 [>>--------------------------] 0% ELAPSED TIME: 84.23 s -------------------------------------------------------------------------------- ... View more