tree 4bf8e4715f3358111450f1d3cf852b6506b15b36
parent 1396fb3dc7a4b9c739e245d260320eb0d3096357
author Julia Wang <jwang98052@yahoo.com> 1483579193 -0800
committer Mariia Mykhailova <mariia@apache.org> 1484681174 -0800

[REEF-1691] Don't request extra evaluators if evaluator failed at WaitingForEvaluator state

When Evaluators fail in both WaitingForEvaluator and TaskRunning states,
in recovery we use _failedEvaluatorsCount in EvaluatorManager to request
new Evaluators. That number includes failed Evaluators in both states,
while we have already requested new Evaluators instead of ones failed in
WaitingForEvaluator state.

The fix is to request only Evaluators failed during/after task submitting
in recovery.

This change also adds a test case for failed evaluators in both
WaitingForEvaluator and TaskRunning states.

JIRA:
  [REEF-1691](https://issues.apache.org/jira/browse/REEF-1691)

This closes #1210