[jira] [Assigned] (HIVE-18769) Vectorization: Disable vectorization of key-less outer joins

2018-02-22 Thread Matt McCline (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-18769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Matt McCline reassigned HIVE-18769:
---

Assignee: Matt McCline  (was: Gopal V)

> Vectorization: Disable vectorization of key-less outer joins
> 
>
> Key: HIVE-18769
> URL: https://issues.apache.org/jira/browse/HIVE-18769
> Project: Hive
>  Issue Type: Bug
>  Components: Vectorization
>Affects Versions: 3.0.0
>Reporter: Gopal V
>Assignee: Matt McCline
>Priority: Major
> Attachments: HIVE-18769.01.patch
>
>
> Left & Right outer joins without keys are valid in SQL and they have 
> different semantics from cross-products
> {code}
> create temporary table foo(x int) stored as orc;
> insert into foo values(1),(2);
> create temporary table bar(y int) stored as orc;
> select count(*) from bar right outer join foo; -- = 2
> select count(*) from bar, foo; -- = 0 
> {code}
> canSpecializeMapJoin should bail on these cases.



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[jira] [Assigned] (HIVE-18769) Vectorization: Disable vectorization of key-less outer joins

2018-02-21 Thread Matt McCline (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-18769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Matt McCline reassigned HIVE-18769:
---

Assignee: Gopal V  (was: Matt McCline)

> Vectorization: Disable vectorization of key-less outer joins
> 
>
> Key: HIVE-18769
> URL: https://issues.apache.org/jira/browse/HIVE-18769
> Project: Hive
>  Issue Type: Bug
>  Components: Vectorization
>Affects Versions: 3.0.0
>Reporter: Gopal V
>Assignee: Gopal V
>Priority: Major
> Attachments: HIVE-18769.01.patch
>
>
> Left & Right outer joins without keys are valid in SQL and they have 
> different semantics from cross-products
> {code}
> create temporary table foo(x int) stored as orc;
> insert into foo values(1),(2);
> create temporary table bar(y int) stored as orc;
> select count(*) from bar right outer join foo; -- = 2
> select count(*) from bar, foo; -- = 0 
> {code}
> canSpecializeMapJoin should bail on these cases.



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[jira] [Assigned] (HIVE-18769) Vectorization: Disable vectorization of key-less outer joins

2018-02-21 Thread Matt McCline (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-18769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Matt McCline reassigned HIVE-18769:
---

Assignee: Matt McCline  (was: Gopal V)

> Vectorization: Disable vectorization of key-less outer joins
> 
>
> Key: HIVE-18769
> URL: https://issues.apache.org/jira/browse/HIVE-18769
> Project: Hive
>  Issue Type: Bug
>  Components: Vectorization
>Affects Versions: 3.0.0
>Reporter: Gopal V
>Assignee: Matt McCline
>Priority: Major
>
> Left & Right outer joins without keys are valid in SQL and they have 
> different semantics from cross-products
> {code}
> create temporary table foo(x int) stored as orc;
> insert into foo values(1),(2);
> create temporary table bar(y int) stored as orc;
> select count(*) from bar right outer join foo; -- = 2
> select count(*) from bar, foo; -- = 0 
> {code}
> canSpecializeMapJoin should bail on these cases.



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[jira] [Assigned] (HIVE-18769) Vectorization: Disable vectorization of key-less outer joins

2018-02-21 Thread Gopal V (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-18769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Gopal V reassigned HIVE-18769:
--

Assignee: Gopal V

> Vectorization: Disable vectorization of key-less outer joins
> 
>
> Key: HIVE-18769
> URL: https://issues.apache.org/jira/browse/HIVE-18769
> Project: Hive
>  Issue Type: Bug
>  Components: Vectorization
>Affects Versions: 3.0.0
>Reporter: Gopal V
>Assignee: Gopal V
>Priority: Major
>
> Left & Right outer joins without keys are valid in SQL and they have 
> different semantics from cross-products
> {code}
> create temporary table foo(x int) stored as orc;
> insert into foo values(1),(2);
> create temporary table bar(y int) stored as orc;
> select count(*) from bar right outer join foo; -- = 2
> select count(*) from bar, foo; -- = 0 
> {code}
> canSpecializeMapJoin should bail on these cases.



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