When upgrading to HDP-2.6.3 and higher versions, additional configuration steps are required to enable HDFS storage for Apache Zeppelin notebooks.
HDP-2.6.3 introduced support for HDFS storage for Apache Zeppelin notebooks and configuration files. In previous versions, notebooks and configuration files were stored on the local disk of the Zeppelin server.
When upgrading to HDP-2.6.3 and higher versions, there are two options for configuring Zeppelin notebook and configuration file storage:
Use HDFS storage (recommended) – Zeppelin notebooks and configuration files must be copied to the new HDFS storage location before upgrading. Additional upgrade and post-upgrade steps must also be performed, as described in the following section.
Use local storage – Perform upgrade and post-upgrade steps to enable local storage.
Enabling HDFS storage makes future upgrades much easier, and also sets up the first step toward enabling Zeppelin High Availability. Therefore it is recommended that you enable HDFS for Zeppelin notebooks and configuration files when upgrading to HDP 2.6.3+ from earlier versions of HDP.
Currently HDFS and local storage are the only supported notebook storage mechanisms in HDP-2.6.3+. Currently VFSNotebookRepo is the only supported local storage option.