Migrating View Instance Data
If you have more than one instance of the same Ambari View, you can migrate view data (for example, entity data, instance data, and View use permissions) from one instance to another. This is useful when a new view version is released and you want to migrate view data from the previous version to the newer version.
![[Important]](../common/images/admon/important.png) | Important |
|---|---|
Migrating view data between instances is supported only for Hive, Pig and Tez views. |
For example, consider a case to migrate from view INSTANCE A (the source view
instance) to view INSTANCE B (the target view instance). In this case, you run
the following command:
curl -v -u admin:admin -X PUT -H "X-Requested-By:1" http://AMBARI_SERVER_HOST:8080/api/v1/views/VIEW_NAME/versions/TARGET_VIEW_VERSION/instances/INSTANCEB/migrate/SOURCE_VIEW_VERSION/INSTANCEA
The command values are as follows:
AMBARI_SERVER_HOSTis the Ambari Server host name or IP address.VIEW_NAMEis the name of the view.TARGET_VIEW_VERSIONis the version of the target view.SOURCE_VIEW_VERSIONis the version of the source view.For example, if you are migrating from version 1.0.0 to 1.0.1, your
SOURCE_VIEW_VERSIONis 1.0.0 andTARGET_VIEW_VERSIONis 1.0.1.