when you run select * from table .. it does not launch a mapreduce job, where are when you put some condition, it does need to process the data so it launches a mapreduce job
now when you start this query, go to your jobtracker page and see how many jobs are running. Is it able to start your job? if not why ? that will tell you why its stuck On Tue, Aug 6, 2013 at 3:22 PM, Manickam P <manicka...@outlook.com> wrote: > Hi, > > If i run a hive query like "select * from table_name limit 10" it is > working. > If i run query like "select column_name from table_name limit 10" it > hangs. > *Total MapReduce jobs = 1* > *Launching Job 1 out of 1* > *Number of reduce tasks is set to 0 since there's no reduce operator* > It just prints the above after that nothing happening in the hive shell. > > Can you pls help me on this. > > > Thanks, > Manickam P > -- Nitin Pawar
