GitHub user minahlee opened a pull request:
https://github.com/apache/zeppelin/pull/1453
[ZEPPELIN-1482] Load updated dependency library on interpreter restart
### What is this PR for?
If user specifies library path in interpreter dependency setting, even when
the file on this path is updated, new file doesn't take effect on interpreter
_restart_ but does only when user _clicks Edit -> Save._
The mechanism of dependency loading is copying all dependency libraries
under `local-repo/
{interpreterId}` and add these directory to classpath of interpreter
process. Zeppelin copies these dependencies either on Zeppelin startup or
dependency saving/editing.
This PR checks if the library on specified local path is updated, and copy
them to `local-repo/
{interpreterId}` on restart if there is change.
### What type of PR is it?
Bug Fix & Improvement
### What is the Jira issue?
[ZEPPELIN-1482](https://issues.apache.org/jira/browse/ZEPPELIN-1482)
### How should this be tested?
1. Download commons-csv-1.1.jar and commons-csv-1.2.jar to /my/path
2. cp commons-csv-1.2.jar /my/path/commons-csv.jar
3. Set dependency artifact of spark interpreter to /my/path/commons-csv.jar
4. Run `%spark import org.apache.commons.csv.CSVFormat.Predefined` in
paragraph and see if it runs without error
5. cp commons-csv-1.1.jar /my/path/commons-csv.jar
6. Restart spark interpreter
7. Run `%spark import org.apache.commons.csv.CSVFormat.Predefined` in
paragraph and see if error occurs.
### 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/minahlee/zeppelin ZEPPELIN-1482
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zeppelin/pull/1453.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 #1453
----
commit 6662e930b4e51e2ff9195a0c8dfbf1bf9029d837
Author: Mina Lee <mina...@apache.org>
Date: 2016-09-23T08:51:39Z
Check if dependency library on specified path has changed and copy them
under local-repo/{interpreterId} on interpreter restart
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