[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-06-12 Thread Jesus Camacho Rodriguez (JIRA) 


 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Fix Version/s: 4.0.0

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Fix For: 3.1.0, 4.0.0
>
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.04.patch, HIVE-19382.05.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.
> This is a temporary fix till lock acquisition is moved before analyze in 
> HIVE-18948.
> With this fix, system proceed as follows. The driver will acquire the 
> snapshot, compile the query wrt that snapshot, and then, it will acquire 
> locks. If snapshot is still valid, it will continue as usual. But if snapshot 
> is not valid anymore, it will recompile the query.
> This is easier to implement than full solution described in HIVE-18948 
> because we do not need to move the logic to extract the read/write entities 
> from a query before compilation (actually while parsing).



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-06-10 Thread Ashutosh Chauhan (JIRA) 


 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ashutosh Chauhan updated HIVE-19382:

   Resolution: Fixed
Fix Version/s: 3.1.0
   Status: Resolved  (was: Patch Available)

Pushed to master and branch-3. Thanks, Jesus!

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Fix For: 3.1.0
>
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.04.patch, HIVE-19382.05.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.
> This is a temporary fix till lock acquisition is moved before analyze in 
> HIVE-18948.
> With this fix, system proceed as follows. The driver will acquire the 
> snapshot, compile the query wrt that snapshot, and then, it will acquire 
> locks. If snapshot is still valid, it will continue as usual. But if snapshot 
> is not valid anymore, it will recompile the query.
> This is easier to implement than full solution described in HIVE-18948 
> because we do not need to move the logic to extract the read/write entities 
> from a query before compilation (actually while parsing).



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-31 Thread Jesus Camacho Rodriguez (JIRA) 


 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.05.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.04.patch, HIVE-19382.05.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.
> This is a temporary fix till lock acquisition is moved before analyze in 
> HIVE-18948.
> With this fix, system proceed as follows. The driver will acquire the 
> snapshot, compile the query wrt that snapshot, and then, it will acquire 
> locks. If snapshot is still valid, it will continue as usual. But if snapshot 
> is not valid anymore, it will recompile the query.
> This is easier to implement than full solution described in HIVE-18948 
> because we do not need to move the logic to extract the read/write entities 
> from a query before compilation (actually while parsing).



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-31 Thread Jesus Camacho Rodriguez (JIRA) 


 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: (was: HIVE-19382.05.patch)

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.04.patch, HIVE-19382.05.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.
> This is a temporary fix till lock acquisition is moved before analyze in 
> HIVE-18948.
> With this fix, system proceed as follows. The driver will acquire the 
> snapshot, compile the query wrt that snapshot, and then, it will acquire 
> locks. If snapshot is still valid, it will continue as usual. But if snapshot 
> is not valid anymore, it will recompile the query.
> This is easier to implement than full solution described in HIVE-18948 
> because we do not need to move the logic to extract the read/write entities 
> from a query before compilation (actually while parsing).



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-31 Thread Jesus Camacho Rodriguez (JIRA) 


 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.05.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.04.patch, HIVE-19382.05.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.
> This is a temporary fix till lock acquisition is moved before analyze in 
> HIVE-18948.
> With this fix, system proceed as follows. The driver will acquire the 
> snapshot, compile the query wrt that snapshot, and then, it will acquire 
> locks. If snapshot is still valid, it will continue as usual. But if snapshot 
> is not valid anymore, it will recompile the query.
> This is easier to implement than full solution described in HIVE-18948 
> because we do not need to move the logic to extract the read/write entities 
> from a query before compilation (actually while parsing).



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-29 Thread Jesus Camacho Rodriguez (JIRA) 


 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Description: 
To ensure correctness, in particular for operations that require exclusive 
({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.

This is a temporary fix till lock acquisition is moved before analyze in 
HIVE-18948.

With this fix, system proceed as follows. The driver will acquire the snapshot, 
compile the query wrt that snapshot, and then, it will acquire locks. If 
snapshot is still valid, it will continue as usual. But if snapshot is not 
valid anymore, it will recompile the query.

This is easier to implement than full solution described in HIVE-18948 because 
we do not need to move the logic to extract the read/write entities from a 
query before compilation (actually while parsing).

  was:To ensure correctness, in particular for operations that require 
exclusive ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.


> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.04.patch, HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.
> This is a temporary fix till lock acquisition is moved before analyze in 
> HIVE-18948.
> With this fix, system proceed as follows. The driver will acquire the 
> snapshot, compile the query wrt that snapshot, and then, it will acquire 
> locks. If snapshot is still valid, it will continue as usual. But if snapshot 
> is not valid anymore, it will recompile the query.
> This is easier to implement than full solution described in HIVE-18948 
> because we do not need to move the logic to extract the read/write entities 
> from a query before compilation (actually while parsing).



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-24 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.04.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.04.patch, HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-11 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.03.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.03.patch, HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-09 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: (was: HIVE-19382.01.patch)

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-09 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.01.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-09 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.02.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.02.patch, 
> HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-02 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.01.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.01.patch, HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-02 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-02 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: (was: HIVE-19382.patch)

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-01 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Component/s: Transactions

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-01 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Affects Version/s: 3.0.0

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>  Components: Transactions
>Affects Versions: 3.0.0
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-01 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Status: Patch Available  (was: In Progress)

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-01 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Attachment: HIVE-19382.patch

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
> Attachments: HIVE-19382.patch
>
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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[jira] [Updated] (HIVE-19382) Acquire locks before generating valid transaction list for some operations

2018-05-01 Thread Jesus Camacho Rodriguez (JIRA) 

 [ 
https://issues.apache.org/jira/browse/HIVE-19382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jesus Camacho Rodriguez updated HIVE-19382:
---
Summary: Acquire locks before generating valid transaction list for some 
operations  (was: Lock acquisition before generating valid transaction list for 
some operations)

> Acquire locks before generating valid transaction list for some operations
> --
>
> Key: HIVE-19382
> URL: https://issues.apache.org/jira/browse/HIVE-19382
> Project: Hive
>  Issue Type: Bug
>Reporter: Jesus Camacho Rodriguez
>Assignee: Jesus Camacho Rodriguez
>Priority: Major
>
> To ensure correctness, in particular for operations that require exclusive 
> ({{INSERT OVERWRITE}}) and semishared ({{UPDATE}}/{{DELETE}}) locks.



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