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https://issues.apache.org/jira/browse/HIVE-26504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-26504 started by László Végh.
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> User is not able to drop table
> ------------------------------
>
> Key: HIVE-26504
> URL: https://issues.apache.org/jira/browse/HIVE-26504
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: László Végh
> Assignee: László Végh
> Priority: Major
>
> Hive won't store anything in *TAB_COL_STATS* for partitioned table, whereas
> impala stores complete column stats in TAB_COL_STATS for partitioned table.
> Deleting entries in TAB_COL_STATS is based on (DB_NAME, TABLE_NAME), not by
> TBL_ID. Renamed tables were having old names in TAB_COL_STATS.
> To Repro:
> {code:java}
> beeline:
> set hive.create.as.insert.only=false;
> set hive.create.as.acid=false;
> create table testes.table_name_with_partition (id tinyint, name string)
> partitioned by (col_to_partition bigint) stored as parquet;
> insert into testes.table_name_with_partition (id, name, col_to_partition)
> values (1, "a", 2020), (2, "b", 2021), (3, "c", 2022);
> impala:
> compute stats testes.table_name_with_partition; -- backend shows new entries
> in TAB_COL_STATS
> beeline:
> alter table testes.table_name_with_partition rename to
> testes2.table_that_cant_be_droped;
> drop table testes2.table_that_cant_be_droped; -- This fails with
> TAB_COL_STATS_fkey constraint violation.
> {code}
> Exception trace for drop table failure
> {code:java}
> Caused by: org.postgresql.util.PSQLException: ERROR: update or delete on
> table "TBLS" violates foreign key constraint "TAB_COL_STATS_fkey" on table
> "TAB_COL_STATS"
> Detail: Key (TBL_ID)=(19816) is still referenced from table "TAB_COL_STATS".
> at
> org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2532)
> at
> org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2267)
> ... 50 more
> {code}
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