Hello guys ! I'm trying to understand the mechanism for a simple query select * from my_table when using HiveServer2.
I'm using the hortonworks ODBC Driver for HiveServer2. I just do a select * from my_table. my_table is an ORC table based on files divised into blocks located on all my datanodes. I have 50 datanodes. My question is the following : Does all the data go from the datanodes to the node hosting the hiveserver2 before coming back to my client ? Or does all the data go directly from the datanodes to my client ? Hope you can help me o/ Thank you Tale
