tree 788baf157cdf01dd6a66d7f8e16ea64fcbe7002a
parent 798f2dbb075107330c8be575182a28d8fa19e89f
author Andrew Chung <afchung90@gmail.com> 1465341068 -0700
committer Julia Wang <juliaw@apache.org> 1465494499 -0700

[REEF-1428] Validate Task Stop failure => FailedTask Event

This addressed the issue by
  * Writing a test to validate that a Task Stop failure triggers a FailedTask Event.
  * Adding helper test classes.
  * Moving the call to TaskStop prior to setting the result of the Task.
  * Inject all ITaskStart and ITaskStop.

JIRA:
  [REEF-1428](https://issues.apache.org/jira/browse/REEF-1428)

This closes #1038