[jira] [Created] (HIVE-26189) Iceberg metadata query throws exceptions after partition evolution

[Jira]

Ádám Szita created HIVE-26189:
---------------------------------

             Summary: Iceberg metadata query throws exceptions after partition 
evolution
                 Key: HIVE-26189
                 URL: https://issues.apache.org/jira/browse/HIVE-26189
             Project: Hive
          Issue Type: Bug
            Reporter: Ádám Szita


The following test case surfaced two issues with metadata table queries:
{code:java}
CREATE EXTERNAL TABLE `partev`( `id` int, `ts` timestamp, `ts2` timestamp)  
STORED BY ICEBERG STORED AS ORC;

ALTER TABLE partev SET PARTITION SPEC (id);
INSERT INTO partev VALUES (1, current_timestamp(), current_timestamp());
INSERT INTO partev VALUES (2, current_timestamp(), current_timestamp());

ALTER TABLE partev SET PARTITION SPEC (year(ts));
INSERT INTO partev VALUES (10, current_timestamp(), current_timestamp());

ALTER TABLE partev SET PARTITION SPEC (month(ts));
INSERT INTO partev VALUES (100, current_timestamp(), current_timestamp());

ALTER TABLE partev SET PARTITION SPEC (day(ts));
INSERT INTO partev VALUES (1000, current_timestamp(), current_timestamp());

ALTER TABLE partev SET PARTITION SPEC (hour(ts));
INSERT INTO partev VALUES (10000, current_timestamp(), current_timestamp());

ALTER TABLE partev SET PARTITION SPEC (bucket(2,id));
INSERT INTO partev VALUES (100000, current_timestamp(), current_timestamp());

select * from default.partev.partitions;

ALTER TABLE partev SET PARTITION SPEC (id, year(ts2));
INSERT INTO partev VALUES (200000, current_timestamp(), current_timestamp());

select * from default.partev.partitions;
 {code}
NPE for removed partition columns from new specs, and class cast exceptions for 
day transform (Integer to LocalDate)



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