C0urante commented on PR #11783:
URL: https://github.com/apache/kafka/pull/11783#issuecomment-1185998538
I've started seeing this worker startup error in the logs for my local runs:
```
[2022-07-15 22:29:48,073] ERROR Stopping due to error
(org.apache.kafka.connect.cli.ConnectDistributed)
org.apache.kafka.connect.errors.ConnectException: Unable to initialize REST
server
at
org.apache.kafka.connect.runtime.rest.RestServer.initializeServer(RestServer.java:203)
at
org.apache.kafka.connect.cli.ConnectDistributed.startConnect(ConnectDistributed.java:101)
at
org.apache.kafka.connect.cli.ConnectDistributed.main(ConnectDistributed.java:80)
Caused by: java.io.IOException: Failed to bind to 0.0.0.0/0.0.0.0:8083
at
org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:349)
at
org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:310)
at
org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
at
org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:234)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.server.Server.doStart(Server.java:401)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at
org.apache.kafka.connect.runtime.rest.RestServer.initializeServer(RestServer.java:201)
... 2 more
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:461)
at sun.nio.ch.Net.bind(Net.java:453)
at
sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:222)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:85)
at
org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344)
... 9 more
```
I've seen it both with the new `test_exactly_once_source` test, and the
`test_bounce` test case (which I've been using as a control group).
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