tree fd2eef7c9a80ae0a7ecdef60fec489d33a18ab7a
parent b8251eb9b3d63c77c61a5950dee5958b654d9633
author Jeffrey(Xilang) Yan <7855100+yantzu@users.noreply.github.com> 1569722950 +0800
committer jerryshao <jerryshao@tencent.com> 1569722950 +0800

[LIVY-658] RSCDriver should catch exception if cancel job failed during shutdown

## What changes were proposed in this pull request?

Currently, if startup meet exception, exception will trigger spark to shutdown, then trigger cancel job, but cancel job will throw another exception due to spark is not initialized. The new exception will swallow the old exception.

https://issues.apache.org/jira/browse/LIVY-658

Before changes:
![cancel job exception](https://user-images.githubusercontent.com/7855100/64118287-f0961900-cdc9-11e9-9b72-d051fb4bdbdf.jpg)

After changes:
![cancel job exception after fix](https://user-images.githubusercontent.com/7855100/64118295-f4c23680-cdc9-11e9-9a2d-38efa0770a99.jpg)

## How was this patch tested?

Tested manually， and  add unit test.

Please review https://livy.incubator.apache.org/community/ before opening a pull request.

Author: Jeffrey(Xilang) Yan <7855100+yantzu@users.noreply.github.com>

Closes #223 from yantzu/initialize_exception_swallow_by_shutdown_exception.