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https://issues.apache.org/jira/browse/FLINK-5098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16166216#comment-16166216
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ASF GitHub Bot commented on FLINK-5098:
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Github user tillrohrmann closed the pull request at:
https://github.com/apache/flink/pull/2830
> Detect network problems to eagerly time out ask operations
> ----------------------------------------------------------
>
> Key: FLINK-5098
> URL: https://issues.apache.org/jira/browse/FLINK-5098
> Project: Flink
> Issue Type: Improvement
> Components: Distributed Coordination
> Affects Versions: 1.2.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
>
> Akka's ask operations are given a timeout after which they should fail with
> an {{AskTimeoutException}}. In some cases, however, it is possible to fail
> early because one has detected that the remote host is not reachable or that
> the actor does not exist on the remote {{ActorSystem}}.
> Usually failing early if one cannot hope for a successful message delivery is
> a desirable behaviour since it speeds up recovery.
> I propose to send Akka's {{Identify}} message with each ask request. The
> identify message allows to detect unreachable/non-existing actors and, thus,
> enables us to fail the ask operation early.
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