[jira] [Resolved] (HIVE-26504) User is not able to drop table

["László Végh (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-26504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

László Végh resolved HIVE-26504.
--------------------------------
    Fix Version/s: 4.0.0-alpha-2
       Resolution: Fixed

> 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
>              Labels: pull-request-available
>             Fix For: 4.0.0-alpha-2
>
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
> 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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