analyze doesn't mark partition column stats as accurate after truncate

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