Sergey Shelukhin created HIVE-20143:
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Summary: analyze doesn't mark partition column stats as accurate
after truncate
Key: HIVE-20143
URL: https://issues.apache.org/jira/browse/HIVE-20143
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
Discovered while looking at txn stats. This works fine for truncate+analyze for
non-partitioned tables, but not for partitions:
{noformat}
set hive.stats.dbclass=fs;
set hive.stats.fetch.column.stats=true;
set hive.stats.autogather=true;
set hive.stats.column.autogather=true;
set hive.compute.query.using.stats=true;
set hive.mapred.mode=nonstrict;
set hive.explain.user=false;
set hive.fetch.task.conversion=none;
set hive.query.results.cache.enabled=false;
create table stats_part1(key int,value string) partitioned by (p int);
insert into table stats_part1 partition(p=101) values (1, "foo");
insert into table stats_part1 partition(p=102) values (2, "bar");
explain select count(key) from stats_part1; -- from stats
truncate table stats_part1 partition(p=101);
explain select count(key) from stats_part1; -- not from stats, ok
analyze table stats_part1 partition(p) compute statistics for columns;
explain select count(key) from stats_part1; -- not from stats still
{noformat}
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