Github user Leemoonsoo commented on the issue:
https://github.com/apache/zeppelin/pull/1145
I have tested this branch and i've got some feedbacks
**Interpreter-setting name and alias**
I see interpreter-setting has alias field. And how about just use
interpreter-setting name as an alias, for simplicity? instead of having both
name and alias field.
**Interpreter selection mechanism.**
This PR changes current interpreter selection mechanism a lot.
For example, if i bind interpreter `%md, %spark (spark, sql), %shell ...`
and try to use
`%sql select * from table`, then i get `prefix not found`.
I strongly recommend keep compatibility of previous interpreter selection
mechanism, because it changes major user experience of Zeppelin.
My suggestion is,
1. select interpreter in previous way first. i.e. matching [group].[name]
with interpreter selection text.
2. if there is no matching interpreter, start matching [alias].[name]
with interpreter selection text.
while [matching
rule](https://github.com/apache/zeppelin/blob/master/zeppelin-zengine/src/main/java/org/apache/zeppelin/interpreter/InterpreterFactory.java#L1004)
is
1. if interpreter selection text specify full [group].[name] or
[alias].[name], then simply find corresponding interpreter-setting and
interpreter.
2. if interpreter selection text specify just name, first assume [group]
or [alias] is omitted.
3. then assume [name] is omitted.
**Import and change interpreter binding**
It can be a future work, but i'd like to at least have an direction how we
want to handle user experience change expected this PR brings.
Before
```
- While Zeppelin instance have the same set of interpreters, imported
notebook may run without modification
- It was possible to quickly change interpreter binding without changing
every paragraph. i.e. Bind 'spark-small-cluster' interpreter setting first and
then bind 'spark-large-cluster' later without changing interpreter selection
text of individual paragraphs
```
After
```
- If paragraph uses alias for interpreter selection, imported notebook will
not able to run unless manually change interpreter selection text for the
Zeppelin instance.
- Once user want to run the same notebook with different
interpreter-setting, user need to change interpreter selection text of all
paragraphs
```
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