[jira] [Closed] (FLINK-4424) Make network environment start-up/shutdown independent of JobManager association

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

     [ https://issues.apache.org/jira/browse/FLINK-4424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann closed FLINK-4424.
--------------------------------
    Resolution: Fixed

Fixed via 78f2a15867734055a9712ea3a27f54d9bed3e43b

> Make network environment start-up/shutdown independent of JobManager association
> --------------------------------------------------------------------------------
>
>                 Key: FLINK-4424
>                 URL: https://issues.apache.org/jira/browse/FLINK-4424
>             Project: Flink
>          Issue Type: Improvement
>          Components: Network, TaskManager
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>
> Currently, the {{TaskManager}} starts the netty network server only after it has registered with a {{JobManager}}. Upon loss of connection to the {{JobManager}} the {{NetworkEnvironment}} is closed.
> The start-up and shutdown of the network server should be independent of the {{JobManager}} connection, especially if we assume that a TM can be associated with multiple JobManagers in the future (FLIP-6).
> Starting the network server only once when the {{TaskManager}} is started has the advantage that we don't have to preconfigure the {{TaskManager's}} data port. Furthermore we don't risk to get stuck when disassociating from a {{JobManager}} because the start-up and shutdown of a {{NetworkEnvironment}} can cause problems (because it has to reserve/free resources).



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