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https://issues.apache.org/jira/browse/HIVE-23809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ZhangQiDong updated HIVE-23809:
-------------------------------
Hadoop Flags: Reviewed
Tags: Tez
Target Version/s: 3.1.0
Status: Patch Available (was: Open)
The modification logic is the same as that of HIVE-22098 patch. However, the
HIVE-22098 patch only works for hive on Mr. HIVE-23809 patch solves the problem
of hive on Tez. If you want tez and MR to have the same result, you need to
apply the HIVE-22098 patch and HIVE-23809 patch at the same time.
> Data loss occurs when using tez engine to join different bucketing_version
> tables
> ---------------------------------------------------------------------------------
>
> Key: HIVE-23809
> URL: https://issues.apache.org/jira/browse/HIVE-23809
> Project: Hive
> Issue Type: Bug
> Components: Hive, Tez
> Affects Versions: 3.1.0
> Reporter: ZhangQiDong
> Assignee: ZhangQiDong
> Priority: Major
> Labels: hive, tez
> Original Estimate: 12h
> Remaining Estimate: 12h
>
> *Test case：*
> create table table_a (a int, b string,c string);
> create table table_b (a int, b string,c string);
> insert into table_a values
> (11,'a','aa'),(22,'b','bb'),(33,'c','cc'),(44,'d','dd'),(5,'e','ee'),(6,'f','ff'),(7,'g','gg');
> insert into table_b values
> (11,'a','aa'),(22,'b','bb'),(33,'c','cc'),(44,'d','dd'),(5,'e','ee'),(6,'f','ff'),(7,'g','gg');
> alter table table_a set tblproperties ("bucketing_version"='1');
> alter table table_b set tblproperties ("bucketing_version"='2');
> *Hivesql：*
> *set hive.auto.convert.join=false;*
> *set mapred.reduce.tasks=2;*
> select ta.a as a_a, tb.b as b_b from table_a ta join table_b tb
> on(ta.a=tb.a);
> set hive.execution.engine=mr;
> +-------+-----+
> |a_a|b_b|
> +-------+-----+
> |5|e|
> |6|f|
> |7|g|
> |11|a|
> |22|b|
> |33|c|
> |44|d|
> +-------+-----+
> set hive.execution.engine=tez;
> +-------+-----+
> |a_a|b_b|
> +-------+-----+
> |6|f|
> |5|e|
> |11|a|
> |33|c|
> +-------+-----+
>
>
>
>
>
>
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