Using the Notebook Interpreter Modes
Notebooks provide three different interpreter modes: shared, scoped and isolated. These modes provide different ways to share the same interpreter settings across notebooks. Each interpreter is a JVM process talking to the Zeppelin daemon. The interpreter modes are as offered by the open-source Apache Zeppelin. You can specify these modes as globally or per note.
The three interpreter modes are:
shared - a single JVM process and a single session serves all notes. As a result, note A can access variables (e.g python, scala, ..) directly which are initialized in other notes.
scoped -Zeppelin runs a single interpreter JVM process but each note runs in its own dedicated session.
isolated - runs a separate interpreter process for each note. So, each note has an absolutely isolated session.
The three interpreter modes are shown as illustrated here.
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Perform the following steps to change the interpreter mode:
Go to a specific running Notebook’s page, and click on Interpreters.
On the Interpreters page, click on the interpreter’s name to expand it.
Click edit.
From the drop-down list, select the appropriate interpreter mode and whether it is per note or global.