[jira] [Created] (FLINK-5718) Handle JVM Fatal Exceptions in Tasks

["Stephan Ewen (JIRA)" <ji...@apache.org>]

Stephan Ewen created FLINK-5718:
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             Summary: Handle JVM Fatal Exceptions in Tasks
                 Key: FLINK-5718
                 URL: https://issues.apache.org/jira/browse/FLINK-5718
             Project: Flink
          Issue Type: Improvement
          Components: Local Runtime
            Reporter: Stephan Ewen


The TaskManager catches and handles all types of exceptions right now (all {{Throwables}}). The intention behind that is:

  - Many {{Error}} subclasses are recoverable for the TaskManagers, such as failure to load/link user code
  - We want to give eager notifications to the JobManager in case something in a task goes wrong.

However, there are some exceptions which should probably simply terminate the JVM, if caught in the task thread, because they may leave the JVM in a dysfunctional limbo state:

  - {{OutOfMemoryError}}
  - {{InternalError}}
  - {{UnknownError}}
  - {{ZipError}}

These are basically the subclasses of {{VirtualMachineError}}, except for {{StackOverflowError}}, which is recoverable and usually recovered already by the time the exception has been thrown and the stack unwound.



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