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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-15919) Migrate instance specific data from one version to another.
Date Tue, 26 Apr 2016 12:36:13 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-15919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15257998#comment-15257998
] 

Hudson commented on AMBARI-15919:
---------------------------------

FAILURE: Integrated in Ambari-trunk-Commit #4738 (See [https://builds.apache.org/job/Ambari-trunk-Commit/4738/])
AMBARI-15919. Migrate instance specific data from one version to (dipayan.bhowmick: [http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=614b12fc382fee77b63f253926bab6aa359ae5df])
* ambari-views/examples/favorite-view/pom.xml
* ambari-server/src/test/java/org/apache/ambari/server/api/services/ViewDataMigrationServiceTest.java
* ambari-views/examples/hello-spring-view/pom.xml
* ambari-views/examples/phone-list-upgrade-view/docs/index.md
* pom.xml
* ambari-views/examples/hello-servlet-view/pom.xml
* ambari-views/examples/cluster-view/pom.xml
* ambari-views/src/main/java/org/apache/ambari/view/migration/ViewDataMigrator.java
* ambari-views/src/main/resources/view.xsd
* ambari-views/examples/property-validator-view/pom.xml
* ambari-views/examples/phone-list-upgrade-view/src/main/resources/WEB-INF/web.xml
* ambari-server/src/main/java/org/apache/ambari/server/orm/dao/PrivilegeDAO.java
* ambari-server/src/main/java/org/apache/ambari/server/view/ViewRegistry.java
* ambari-views/examples/simple-view/pom.xml
* ambari-views/examples/phone-list-upgrade-view/src/main/java/org/apache/ambari/view/phonelist/PhoneListServlet.java
* ambari-views/examples/weather-view/pom.xml
* ambari-views/examples/calculator-view/pom.xml
* ambari-views/examples/property-view/pom.xml
* ambari-views/examples/pom.xml
* ambari-views/examples/restricted-view/pom.xml
* ambari-views/examples/phone-list-view/pom.xml
* ambari-server/src/test/java/org/apache/ambari/server/orm/entities/ViewInstanceEntityTest.java
* ambari-views/examples/phone-list-upgrade-view/src/main/java/org/apache/ambari/view/phonelist/PhoneUser.java
* ambari-views/src/main/java/org/apache/ambari/view/migration/EntityConverter.java
* ambari-server/src/main/java/org/apache/ambari/server/orm/entities/ViewInstanceEntity.java
* ambari-server/src/main/java/org/apache/ambari/server/view/ViewDataMigrationContextImpl.java
* ambari-views/src/main/java/org/apache/ambari/view/migration/ViewDataMigrationException.java
* ambari-views/examples/helloworld-view/pom.xml
* ambari-views/src/main/java/org/apache/ambari/view/validation/Validator.java
* ambari-server/src/main/java/org/apache/ambari/server/api/services/ViewDataMigrationService.java
* ambari-server/src/main/java/org/apache/ambari/server/view/configuration/ViewConfig.java
* ambari-views/examples/phone-list-upgrade-view/pom.xml
* ambari-views/src/main/java/org/apache/ambari/view/migration/ViewDataMigrationContext.java
* ambari-server/src/main/java/org/apache/ambari/server/api/services/ViewInstanceService.java
* ambari-server/src/test/java/org/apache/ambari/server/view/configuration/ViewConfigTest.java
* ambari-views/examples/phone-list-upgrade-view/src/main/resources/view.xml
* ambari-views/examples/phone-list-upgrade-view/src/main/java/org/apache/ambari/view/phonelist/DataMigrator.java
* ambari-views/examples/README.md
* ambari-server/src/test/java/org/apache/ambari/server/view/ViewDataMigrationContextImplTest.java


> Migrate instance specific data from one version to another.
> -----------------------------------------------------------
>
>                 Key: AMBARI-15919
>                 URL: https://issues.apache.org/jira/browse/AMBARI-15919
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-views
>    Affects Versions: 2.4.0
>            Reporter: Gaurav Nagar
>            Assignee: Gaurav Nagar
>             Fix For: 2.4.0
>
>         Attachments: AMBARI-15919_trunk.patch
>
>
> It is critical that we provide a way to migrate instance data and view data information
between versions of views. We need to support the following use case:
> - New version of view is instantiated. Since instance specific data will not be available
to the new instance of the view (if the version has changed), there needs to be a way of migrating
existing information over to the new view instance.
> - The Ambari view framework needs to provide a facility to invoke call back handlers
(of sorts) to allow the view itself to handle the migration from and older version to the
current version.
> An example...
> After a view instance (X1) is created (say from XView 1.0.0), a view might use instance
data and/or datastore data. When a new view is released (say from XView 2.0.0), an ambari
admin will want to create a new instance (X2) and migrate the data from the existing instance
(X1). Ambari should provide a mechanism to perform this migration.
> 1) The ambari admin creates new instance X2 in the admin interface.
> 2) The ambari admin can select to migrate data from an existing instance.
> 3) The ambari admin initiates the migration of instance and datastore. The ambari views
framework starts the processing of instance + datastore data movement (copying) to the new
X2 instance scope.
> 4) The framework should call into a hook in the view in case any changes are needed to
the X1 info before they saved in the new X2 instance.



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