Upgrading HDP Manually
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Finalize Upgrade

You can start HDFS without finalizing the upgrade. When you are ready to discard your backup, you can finalize the upgrade.

[Warning]Warning

You must verify your filesystem health before finalizing the upgrade. After you finalize an upgrade, you cannot roll back.

To finalize the upgrade process, run the following command as the $HDFS_USER:

hadoop dfsadmin -finalizeUpgrade