[GitHub] incubator-zeppelin pull request: Enable user to change shell inter...

[AhyoungRyu]

GitHub user AhyoungRyu opened a pull request:

    https://github.com/apache/incubator-zeppelin/pull/738

    Enable user to change shell interpreter command timeout property

    ### What is this PR for?
    Although Shell Interpreter has already have [command timeout 
property](https://github.com/apache/incubator-zeppelin/blob/master/shell/src/main/java/org/apache/zeppelin/shell/ShellInterpreter.java#L49),
 users can not change this property via Zeppelin UI. So I added some code lines 
to `ShellInterpreter.java` so that users can change this value at the 
interpreter setting tab.
    
    ### What type of PR is it?
    Improvement
    
    ### Todos
    * [x] - Enable user to change shell interpreter command timeout property
    * [x] - Fix a dead link in `interpreter.java`
    
    ### Is there a relevant Jira issue?
    Nope
    
    ### How should this be tested?
    After applying this PR, you can make `%sh` interpreter at the Zeppelin 
interpreter setting section. 
      1. Change `shell.command.timeout.millisecs` 600000(default value) -> 5000 
so that you can check quickly
      2. Run 
    
      * **Success Case**
      
      ```
      %sh
      date && sleep 3 && date
      ```
      
      then you can get a result as below 
      
      ```
      Mon Feb 22 18:25:00 KST 2016
      Mon Feb 22 18:25:03 KST 2016
      ExitValue: 143
      ```
      
      * **Error Case(because of timeout property)**
      
      ```
      %sh
      date && sleep 6 && date
      ```
      
      then you can get a result as below 
      
      ```
      Mon Feb 22 18:25:00 KST 2016
      Paragraph received a SIGTERM.
      ExitValue: 143
      ```
    
    ### Screenshots (if appropriate)
    **Before**
    ![screen shot 2016-02-22 at 7 01 32 
pm](https://cloud.githubusercontent.com/assets/10060731/13215178/efbcd26a-d996-11e5-96dd-1fc01a6c96ea.png)
    
    **After**
    ![screen shot 2016-02-22 at 6 57 29 
pm](https://cloud.githubusercontent.com/assets/10060731/13215151/ccbdd62e-d996-11e5-81e5-0eda4de7603d.png)
    
    ### Questions:
    * Does the licenses files need update? No
    * Is there breaking changes for older versions? No
    * Does this needs documentation? No

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/AhyoungRyu/incubator-zeppelin shell-timeout

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-zeppelin/pull/738.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #738
    
----
commit b16211dc4bc9bbda714a0f87245025781599fd3f
Author: AhyoungRyu <fbdkdu...@hanmail.net>
Date:   2016-02-22T09:36:05Z

    Enable user to change shell interpreter timeout property

commit 3b4faec18b4e2ddb18a271272fc8828f5e438205
Author: AhyoungRyu <fbdkdu...@hanmail.net>
Date:   2016-02-22T09:37:28Z

    Fix reference link in interpreter.java

----


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