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From "Matthias J. Sax (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-2588) Implement KillOptions
Date Fri, 28 Aug 2015 01:11:46 GMT
Matthias J. Sax created FLINK-2588:
--------------------------------------

             Summary: Implement KillOptions
                 Key: FLINK-2588
                 URL: https://issues.apache.org/jira/browse/FLINK-2588
             Project: Flink
          Issue Type: Improvement
          Components: Storm Compatibility
            Reporter: Matthias J. Sax
            Priority: Minor


In Storm, topologies run forever and need to be terminate via `LocalCluster.killTopology()`
or `Client.killTopology()`. For both calls, it is possible to specify a `KillOptions` parameter.
Currently, this parameter is ignored.

`KillOptions` in Storm offer only a single option:; `.set_wait_secs(int)`. This delays the
killing by the specified number of seconds. (Need to double check if the call blocks for the
specified number of seconds or not).

Furthermore, in Flink `killTopology()` is implemented to send the "stop" signal. As the "stop"
signal is no hard termination, it would be nice to be able to send the "cancel" signal, too.
  # For this, `FlinkKillOptions` should be introduced (extending `KillOptions`). With `FlinkKillOptions`
it should be possible to set the signal type to "cancel".
 # Additionally, an option should be available to make this call blocking (for "stop" and
"cancel"); ie, the call returns not before the job is cleaned up.
 # Last but not least, a "stop-wait-cancel" feature can be implements: send a "stop" signal
and wait for a specific time. If job does not finish within this time, we assume that the
stop signal was ignored and thus, a "cancel" is sent.



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