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https://issues.apache.org/jira/browse/UIMA-4773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik closed UIMA-4773.
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Resolution: Fixed
Modified Agent and JP to stop using Socket for private socket channel for
communicating STOP requests. Instead an agent sends SIGTERM to force JP to stop
> UIMA DUCC: JP throws BindException on startup if port is not available
> ----------------------------------------------------------------------
>
> Key: UIMA-4773
> URL: https://issues.apache.org/jira/browse/UIMA-4773
> Project: UIMA
> Issue Type: Bug
> Components: DUCC
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.1.0-Ducc
>
>
> On startup a JP throws
> java.net.BindException: Address already in use
> A JP starts a Camel route on a socket to listen for agent STOP requests. This
> route can fail if a socket port is not available.
> Change Agent to send SIGTERM signal to JP to force an orderly shutdown
> instead of sending a STOP request over a dedicated socket channel. with this
> change, the JP no longer needs to create a Camel route over socket listener.
> Instead it just needs to catch the SIGTERM signal, quiesce and stop.
> The Agent will send SIGKILL (-9) to a process that refuses to stop for
> SIGTERM.
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