[jira] [Reopened] (FLINK-23209) Timeout heartbeat if the heartbeat target is no longer reachable

["Till Rohrmann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-23209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann reopened FLINK-23209:
-----------------------------------

> Timeout heartbeat if the heartbeat target is no longer reachable
> ----------------------------------------------------------------
>
>                 Key: FLINK-23209
>                 URL: https://issues.apache.org/jira/browse/FLINK-23209
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Coordination
>    Affects Versions: 1.13.1, 1.12.4
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.14.0
>
>
> With FLINK-23202 it should now be possible to see when a remote RPC endpoint is no longer reachable. This can be used by the {{HeartbeatManager}} to mark an heartbeat target as no longer reachable. That way, it is possible for Flink to react faster to losses of components w/o having to wait for the heartbeat timeout to expire. This will result in faster recoveries (e.g. if a {{TaskExecutor}} dies). 
> With this change we can improve trading off speed of detecting dead {{TaskManagers}} against running on an unstable/overloaded network where heartbeat messages are delayed.



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