If the settings are missing or incorrect, add or update them to
the above values.
In the Zeppelin UI, check the
Interpreters page for any duplicate entries.
If any duplicates exist:
Backup and then delete the
interpreter.json file from HDFS
(/user/zeppelin/conf/interpreter.json) and from
the local filesystem on the Zeppelin server host
(/var/lib/zeppelin/conf/interpreter.json).
Restart the Zeppelin service in Ambari.
In the Zeppelin UI, confirm that the duplicate entries
no longer exist.
If any custom interpreter settings are missing, add them again
from the Interpreters page.
Verify that your existing notebooks are still
available.