Thank you Nitin for reply. I am using mysql database ,and also I can see new row created for the partition ,but all values are zero . I think explicitly giving mysql data base wont make a difference .
From: Nitin Pawar [mailto:nitinpawar...@gmail.com] Sent: Tuesday, July 22, 2014 11:05 PM To: user@hive.apache.org Subject: Re: Hive Statistics by default hive stores the statistics in derby database. If you want a persistent look at column statistics, you may want to create mysql based database for column statistics. Your queries look fine On Tue, Jul 22, 2014 at 10:50 PM, Navdeep Agrawal <navdeep_agra...@symantec.com<mailto:navdeep_agra...@symantec.com>> wrote: Hi , i am trying to compute statistics on ORC File but i am unable see any changes in PART_COL_STATS as well on using set hive.compute.query.using.stats=true; set hive.stats.reliable=true; set hive.stats.fetch.column.stats=true; set hive.stats.fetch.partition.stats=true; set hive.cbo.enable=true; to get max value of a column it is running full Map reduce on column .. what i want to use is max value stored in meta store ,but i am unable to catch these statistics . my table desc is load_inst_id int src_filename string server_date date my analyze query is analyze table mytable partition(server_date=’2013-11-30′) compute statistics for columns load_inst_id; i am always getting 0 as loadinstant id ,i have to turn off my hive.compute.query.using.stats to get correct result(through map reduce max(load_inst_id)) -- Nitin Pawar
