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