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Hive / HCatalog Forum

hive Stats

  • #57605
    Navdeep Agrawal

    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 .

  • Author
  • #57656
    Navdeep Agrawal

    to add
    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 .

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