tree 41e2729de6c3b694a9907ed6b18869efab15fe8c
parent 440da45768b04abd5a64db6d02764fea28124476
author Yunseong Lee <yunseong@apache.org> 1580991588 +0900
committer GitHub <noreply@github.com> 1580991588 +0900
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[NEMO-304] Fail-fast for mis-configuration in user application (#167)

JIRA: [NEMO-304: Fail-fast for mis-configuration in user application](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-304)

**Major changes:**
- This PR makes JobLauncher check the validity of user main method early, so that we can avoid initializing the whole system if there is a mis-configuration.

**Minor changes to note:**
- 

**Tests for the changes:**
- Added `testNotExistingUserMain` in SparkScala.java to test whether the `InvalidUserMainException` is thrown if the argument of `addUserMain()` is a non-existing class.

**Other comments:**
- 

Closes #167 

Co-authored-by: Taegeon Um <taegeonum@gmail.com>
Co-authored-by: Won Wook SONG <wonook@apache.org>