### What is this PR for?
This is first step improving current Python interpreter implementation.
It has just a cleanup, style and docs improvements.
### What type of PR is it?
Improvement
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
Author: Alexander Bezzubov <bzz@apache.org>
Closes#1021 from bzz/improve/python and squashes the following commits:
3cafa22 [Alexander Bezzubov] Python: make interpreter logs less verbose
744f7d2 [Alexander Bezzubov] Python: move technical details from doc to README.md
0f74e5d [Alexander Bezzubov] Python: return first running job
08c2bb4 [Alexander Bezzubov] Python: upd Java code to conform project conventions
e84cd5c [Alexander Bezzubov] Python: normalize newlines in python
58efcc9 [Alexander Bezzubov] Python: normalize newlines in Java
### What is this PR for?
When people implement a new interpreter, they extend [interpreter.java](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/Interpreter.java) as described in [here](https://zeppelin.apache.org/docs/0.6.0-SNAPSHOT/development/writingzeppelininterpreter.html). Among the several methods in [interpreter.java](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/Interpreter.java), [completion API](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/Interpreter.java#L109) enables auto-completion.
However this API is too simple compared to other project's auto-completion and hard to add more at the moment. So for the aspect of further expansion, it would be better to separate and restructure this API before the this release( 0.6.0 ).
### What type of PR is it?
Improvement
### Todos
* [x] - Create new structure : `InterpreterCompletion` in `RemoteInterpreterService.thrift` and regenerate `zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/thrift/*` files
* [x] - Change all existing `List<String> completion` -> `List<InterpreterCompletion> completion`
* [x] - Change `paragraph.controller.js` to point real `name` and `value`
### What is the Jira issue?
[ZEPPELIN-982](https://issues.apache.org/jira/browse/ZEPPELIN-982)
### How should this be tested?
Since this improvement is just API change, it should work same as before. So after applying this patch, and check whether auto-completion works well or not.
Use `. + ctrl` for auto-completion. For example,
```
%spark
sc.version
```
When after typing `sc.` and pushing `. + ctrl` down, `version` should be shown in the auto-completion list.
### Screenshots (if appropriate)
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
Author: AhyoungRyu <fbdkdud93@hanmail.net>
Closes#984 from AhyoungRyu/ZEPPELIN-982 and squashes the following commits:
311dc29 [AhyoungRyu] Fix travis
9d384ec [AhyoungRyu] Address @minalee feedback
fdfae8f [AhyoungRyu] Address @jongyoul review
bd4f8c0 [AhyoungRyu] Remove abstract and make it return null by default
f8352c7 [AhyoungRyu] Fix travis error
43d81f6 [AhyoungRyu] Remove console.log
24912fa [AhyoungRyu] Fix type casting error in SparkInterpreter
80e295b [AhyoungRyu] Change return type
bd04c22 [AhyoungRyu] Apply new InterpreterCompletion class to all interpreter class files
c283043 [AhyoungRyu] Apply new InterpreterCompletion class under zeppelin-zengine/
dbecc51 [AhyoungRyu] Apply new InterpreterCompletion class under zeppelin-server/
6449455 [AhyoungRyu] Apply new InterpreterCompletion class under zeppelin-interpreter/
919b159 [AhyoungRyu] Add automatically generated thrift class
9e69e11 [AhyoungRyu] Change v -> v.name & v.value in front
73e374e [AhyoungRyu] Define InterpreterCompletion structure to thrift file
### What is this PR for?
Avoiding and preventing undesired NullPointerException during re-loading python interpreter
Since py4j is optional when PythonInterpreter starts, it should be optional too while it close.
### What type of PR is it?
[Improvement]
### What is the Jira issue?
* N/A
### How should this be tested?
Reload PythongInterpreter on Zeppelin web "Interpreter" menu and check the log message if it complains NullPointerException
### Screenshots (if appropriate)
### Questions:
* Does the licenses files need update? no
* Is there breaking changes for older versions? no
* Does this needs documentation? no
Author: Kwon, Yeong-Eon <happylogin@gmail.com>
Author: Y.E. Kwon <OutOfBedlam@users.noreply.github.com>
Closes#1009 from OutOfBedlam/python and squashes the following commits:
5ed2413 [Y.E. Kwon] Fix code style
ccbf7ef [Kwon, Yeong-Eon] Prevent NullPointerException if "gatewayServer" does not exist
### What is this PR for?
Remove `incubating` term from pom files
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
Author: Mina Lee <minalee@nflabs.com>
Closes#942 from minahlee/tlp/removeIncubating and squashes the following commits:
e605b54 [Mina Lee] Remove incubating from pom files
### What is this PR for?
Adding a python 2 &3 interpreter. It's a basic implementation (no py4j for example), with a java ProcessBuilder object used to instantiate a python REPL.
The interpreter doesn't bring it own python binary but uses the python specified by python.path configutation. Thus, you can still use your specific installed python modules (scikit-learn, matplotlib...) and the interpreter is able to work with python 2 & 3 without change.
I had a python helper function (zeppelin_show() ) to easily display matplotlib graph as SVG.
### What type of PR is it?
[Feature]
### Todos
* [x] - Code review
* [x] - Improve bootstrap.py : choose available helper functions and their names
* [x] - Unit / IT tests ?
* [x] documentation updates needed, that AhyoungRyu pointed out
* [X] LICENSE needs to be updated to include all non-apache licensed dependencies (i.e AFAIK Py4j is BSD ) in bin-license
* [x] double-check that code formatting conforms project style guide
* [x] the branch need to be rebased on latest master.
### What is the Jira issue?
[ZEPPELIN-502](https://issues.apache.org/jira/browse/ZEPPELIN-502?jql=project%20%3D%20ZEPPELIN%20AND%20text%20~%20%22python%22)
### How should this be tested?
1. In interpreter screen, in Python section, specify in python.path the python binary you want to use
2. In a paragraph, you can use the interpreter with **_%python_**. Calling help() will describe you the interpreter functionnalities.
3. Install py4j (pip install py4j) if you want to use input form
### Screenshots
### Questions:
* Does the licenses files need update? Yes, only bin-license (py4j)
* Is there breaking changes for older versions? No
* Does this needs documentation? Yes
Author: Hervé RIVIERE <hriviere@users.noreply.github.com>
Closes#869 from hriviere/PR_interpreter_python and squashes the following commits:
80b6e75 [Hervé RIVIERE] [ZEPPELIN-502] move BSD py4j license to zeppelin-distribution/src/bin_license/license
a4b82a5 [Hervé RIVIERE] [ZEPPELIN-502]Improving doc following @AhyoungRyu review
3252353 [Hervé RIVIERE] [ZEPPELIN-502] Formatting code to respect project convention
54ec4f1 [Hervé RIVIERE] [ZEPPELIN-502]Improving doc following @AhyoungRyu review
6a831bc [Hervé RIVIERE] [ZEPPELIN-502] Add BSD py4j license
11e1b9c [Hervé RIVIERE] [ZEPPELIN-502] minor changes in python.md
e5d0bdb [Hervé RIVIERE] [ZEPPELIN-502] change PYTHON_PATH to ZEPPELIN_PYTHON
c62ac98 [Hervé RIVIERE] [ZEPPELIN-502] Improve python.md
5008125 [Hervé RIVIERE] [ZEPPELIN-502] Improve python.md with features not yet supported and technical description
7d533e1 [Hervé RIVIERE] [ZEPPELIN-502] Add tests and reformating code to help tests writing
fecaf25 [Hervé RIVIERE] [ZEPPELIN-502] Rename python.path to python and default from /usr/bin/python to python
02d1320 [Hervé RIVIERE] [ZEPPELIN-502] Input form, change from simple input form to native (pyspark syntax)
60d2956 [Hervé RIVIERE] [ZEPPELIN-502] Indent as pep8 convention
9bdb192 [Hervé RIVIERE] [ZEPPELIN-502] Add python.md to _navigation.html
7142aa5 [Hervé RIVIERE] [ZEPPELIN-502] Catch exception in logger.error
1a86ad7 [Hervé RIVIERE] [ZEPPELIN-502] Python interpreter group
