About the Migration Scope
An Oracle Big Data Cloud cluster can be migrated from Oracle Cloud Infrastructure Classic to Oracle Cloud Infrastructure. This document describes how to perform that migration.
Note:
You can also migrate Oracle Big Data Cloud clusters to Cloudera on Oracle Cloud Infrastructure IaaS. For instructions, see My Oracle Support Doc ID 2572925.1 athttp://support.oracle.com.
You're advised to retain your Oracle Big Data Cloud cluster(s) for a minimum of three months after setting up a functional alternative environment, at least in a stopped state, so if any data, metadata, or configuration is missing you can refer to the cluster to get the required information. When a cluster is in a stopped state you're not charged for compute resources, but are still charged for storage. See Stop, Start, and Restart a Cluster in Using Oracle Big Data Cloud.
The following table lists the artifacts that can be migrated from Oracle Big Data Cloud.
| Artifact | Approach | More Information |
|---|---|---|
| Data in HDFS | Copy HDFS data to the Oracle Cloud Infrastructure object store | Export Data in HDFS |
| Data in the Oracle Cloud Infrastructure Classic object store (for clusters based on Oracle Cloud Infrastructure Classic) | Copy data to the Oracle Cloud Infrastructure object store | Topics in Export Data from the Oracle Cloud Infrastructure Classic Object Store |
| Hive metadata | Dump the Hive database in the MySQL database in the source | Topics in Export Metadata |
| Zeppelin notebooks | Export notebook definitions from /user/zeppelin/notebook in HDFS
|
Topics in Export Metadata |
| Configuration files (HDFS, YARN, and Spark) |
Extract configuration data using the Ambari REST API. You can refer to these files for classpath settings and performance parameters during migration. You'll need to analyze exported configurations and determine how to apply the configuration changes to the target environments. |
Topics in Export Metadata |
| Versions of various open source components | Export service version details using the Ambari REST API. You can also get version details from the Ambari console (Admin > Stack and Versions). | Topics in Export Metadata |
Note:
Oracle Identity Cloud Service (IDCS) integration is not supported for Oracle Big Data Cloud on Oracle Cloud Infrastructure. If you migrate an IDCS-enabled cluster from the Oracle Cloud Infrastructure Classic environment, you won't be able to use IDCS users with Oracle Big Data Cloud on Oracle Cloud Infrastructure.