About preview features

Preview features are still under development and are subject to improvement.

Using a preview feature and have feedback to share? Contact us.

Preview features

• IBM Cloud Object Storage source
• Databricks metadata migration
• Snowflake metadata migration
• Support for Java 11
• Rate limits
  
• Paged and non-paged configuration. Used to provide support for HDFS-compatible file systems like GPFS. (GPFS is currently not fully supported in this release.)

info

You need to enable the rate limits feature before you can use it. See Hive Migrator preview features for more information.

Preview features - need enabling

Check which preview features are currently active and enable or disable them with the following steps.

Data Migrator preview features

View preview feature status

Use this command to return the status of all available preview features:

curl localhost:18080/preview

The command will return information on any available preview features in the following format:

Output

{
  "preview/<feature-1>" : "OFF",
  "preview/<feature-2>" : "OFF"
}

Enable a preview feature

1. Open /etc/wandisco/livedata-migrator/application.properties in a text editor.
2. On the preview feature parameter line, change OFF to ON. For example:
   Example for enabling a preview feature

   preview.feature.<feature-name>=ON
3. Save the file.
4. Restart the Data Migrator service.
   See System service commands - Data Migrator.

The preview feature is now enabled. To turn a preview feature off, follow the same steps, but replace ON with OFF.

Hive Migrator preview features

These preview features apply to the Hive Migrator component of Data Migrator, which migrates a range of metadata types, including Hive metadata.

View preview feature status

Use this command to return the status of all available preview features:

curl localhost:6780/preview

The command will return information similar to the following:

Output

{
  "ratelimit" : "OFF"
}

Enable a preview feature

1. Open /etc/wandisco/hivemigrator/application.properties in a text editor.
2. Add the following preview feature parameter line:

   preview.feature.ratelimit=ON
3. Save the file.
4. Restart the Hive Migrator service. See System service commands - Hive Migrator.

The preview feature is now enabled. To turn a preview feature off, follow the same steps, but replace ON with OFF.