Monday, March 26, 2018

Authentication error and java.net.ConnectException: Connection refused

By Hường Hana 12:30 AM Leave a Comment

In a java web application running in tomcat I get the following errors in the server log:

    2018-03-16 13:18:49,456 ERROR [Caesium-1-3]  c.a.scheduler.core.JobLauncher Scheduled job with ID 'IndexingAnalyticsJob' failed     rx.exceptions.OnErrorNotImplementedException: java.net.ConnectException: Connection refused         at rx.observables.BlockingObservable$8.call(BlockingObservable.java:642)         at rx.observables.BlockingObservable$8.call(BlockingObservable.java:639)         at rx.observables.BlockingObservable$9.onError(BlockingObservable.java:673)         at rx.internal.operators.NotificationLite.accept(NotificationLite.java:147)         at rx.observables.BlockingObservable.subscribe(BlockingObservable.java:528)         at rx.observables.BlockingObservable.subscribe(BlockingObservable.java:665)         at rx.observables.BlockingObservable.subscribe(BlockingObservable.java:639)         at  ...         at java.lang.Thread.run(Thread.java:748)     Caused by: java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused         at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)         at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)         at rx.internal.operators.OnSubscribeToObservableFuture$ToObservableFuture.call(OnSubscribeToObservableFuture.java:74)         at rx.internal.operators.OnSubscribeToObservableFuture$ToObservableFuture.call(OnSubscribeToObservableFuture.java:43)         at rx.Observable.subscribe(Observable.java:8264)         at rx.Observable.subscribe(Observable.java:8231)         at rx.observables.BlockingObservable.subscribe(BlockingObservable.java:507)         ... 16 common frames omitted     Caused by: java.net.ConnectException: Connection refused         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)         at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)         at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvent(DefaultConnectingIOReactor.java:173)         at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:147)         at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:350)         at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.execute(PoolingNHttpClientConnectionManager.java:191)         at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase$1.run(CloseableHttpAsyncClientBase.java:64)         ... 1 common frames omitted

But it only happens from time to time so I am suspecting network outages, are there any good tools to investigate this/traffic etc.?

1 Answers

Answers 1

Upgrading to latest version of the project dependencies seems to have solved the issue.

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