[jira] [Commented] (HIVE-24920) TRANSLATED_TO_EXTERNAL tables may write to the same location

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

    [ https://issues.apache.org/jira/browse/HIVE-24920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17524983#comment-17524983 ] 

tanghui commented on HIVE-24920:
--------------------------------

After the patch is updated, the partition table location and hdfs data directory are displayed normally, but the partition location of the table in the SDS in the Hive metabase is still displayed as the location of the old table, resulting in no data in the query partition.

------------------------------------------------------------
CREATE TABLE part_test(
c1 string
,c2 string
)PARTITIONED BY (dat string)

insert into part_test values ("11","th","20220101")
insert into part_test values ("22","th","20220102")

alter table part_test rename to part_test11;

--this resulting in no data in the query partition.
select * from part_test11 where dat="20220101";
---------------------------------------------------------------------------------------------

SDS in the Hive metabase:
select SDS.LOCATION from TBLS,SDS where TBLS.TBL_NAME="part_test11" AND TBLS.TBL_ID=SDS.CD_ID;

---------------------------------------------------------------------------------------------------
|LOCATION|
|hdfs://nameservice1/warehouse/tablespace/external/hive/part_test11|
|hdfs://nameservice1/warehouse/tablespace/external/hive/part_test/dat=20220101|
|hdfs://nameservice1/warehouse/tablespace/external/hive/part_test/dat=20220102|

---------------------------------------------------------------------------------------------------

 

We need to modify the partition location of the table in SDS to ensure that the query results are normal

 

> TRANSLATED_TO_EXTERNAL tables may write to the same location
> ------------------------------------------------------------
>
>                 Key: HIVE-24920
>                 URL: https://issues.apache.org/jira/browse/HIVE-24920
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>              Labels: metastore_translator, pull-request-available
>             Fix For: 4.0.0, 4.0.0-alpha-1
>
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> {code}
> create table t (a integer);
> insert into t values(1);
> alter table t rename to t2;
> create table t (a integer); -- I expected an exception from this command (location already exists) but because its an external table no exception
> insert into t values(2);
> select * from t;  -- shows 1 and 2
> drop table t2;    -- wipes out data location
> select * from t;  -- empty resultset
> {code}



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