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https://issues.apache.org/jira/browse/PHOENIX-4799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16570948#comment-16570948
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Hudson commented on PHOENIX-4799:
---------------------------------

FAILURE: Integrated in Jenkins build Phoenix-4.x-HBase-1.3 #180 (See 
[https://builds.apache.org/job/Phoenix-4.x-HBase-1.3/180/])
PHOENIX-4799 Write cells using checkAndMutate to prevent conflicting (tdsilva: 
rev 7a2531d5a9efbefbcf158f73cbdc218d3556354c)
* (edit) 
phoenix-core/src/it/java/org/apache/phoenix/end2end/BasePermissionsIT.java
* (edit) 
phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServicesImpl.java
* (edit) phoenix-core/src/it/java/org/apache/phoenix/end2end/ViewIT.java
* (edit) phoenix-core/src/it/java/org/apache/phoenix/end2end/UpgradeIT.java
* (edit) 
phoenix-core/src/main/java/org/apache/phoenix/query/DelegateConnectionQueryServices.java
* (edit) 
phoenix-core/src/it/java/org/apache/phoenix/end2end/AlterTableWithViewsIT.java
* (edit) 
phoenix-core/src/main/java/org/apache/phoenix/jdbc/PhoenixDatabaseMetaData.java
* (edit) 
phoenix-core/src/it/java/org/apache/phoenix/end2end/QueryDatabaseMetaDataIT.java
* (edit) phoenix-core/src/main/java/org/apache/phoenix/query/QueryConstants.java
* (edit) 
phoenix-core/src/it/java/org/apache/phoenix/end2end/TableDDLPermissionsIT.java
* (edit) 
phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionlessQueryServicesImpl.java
* (edit) 
phoenix-core/src/it/java/org/apache/phoenix/end2end/ChangePermissionsIT.java
* (edit) 
phoenix-core/src/it/java/org/apache/phoenix/end2end/MigrateSystemTablesToSystemNamespaceIT.java
* (edit) 
phoenix-core/src/it/java/org/apache/phoenix/end2end/TenantSpecificTablesDDLIT.java
* (edit) 
phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServices.java
* (edit) 
phoenix-core/src/main/java/org/apache/phoenix/schema/MetaDataClient.java


> Write cells using checkAndMutate to prevent conflicting changes
> ---------------------------------------------------------------
>
>                 Key: PHOENIX-4799
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4799
>             Project: Phoenix
>          Issue Type: Sub-task
>    Affects Versions: 4.15.0, 5.1.0
>            Reporter: Thomas D'Silva
>            Assignee: Thomas D'Silva
>            Priority: Major
>             Fix For: 4.15.0, 5.1.0
>
>         Attachments: PHOENIX-4799-v2.patch, PHOENIX-4799-v3.patch, 
> PHOENIX-4799-v4-4.x-HBase-1.3.patch, PHOENIX-4799-v4.patch, 
> PHOENIX-4799-v5-4.x-HBase-1.3.patch, PHOENIX-4799-v5.patch, 
> PHOENIX-4799-v6-4.x-HBase-1.3.patch, PHOENIX-4799-v6.patch
>
>
> In order to prevent race conditions when multiple client try to mutate the 
> same column before sending the request to mutate the column to the server do 
> a checkAndMutate with the column name being added/dropped. Also:
>  1. When a view is created do a checkAndMutate with the columns in the view 
> where clause.
>  2. When an index on a view is created do a checkAndMutate with the indexed 
> columns.
>  
> To prevent a race condition in the DROP TABLE CASCADE case, when a table is 
> dropped do a checkAndMutate with the rowkey of the base table name. If a view 
> is created it also does a checkAndMutate with the same rowkey. 



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