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Posted to issues@nifi.apache.org by "Charlie Meyer (JIRA)" <ji...@apache.org> on 2019/04/10 06:07:00 UTC
[jira] [Comment Edited] (NIFI-6201) Suppress stacktrace on
connection refused when NiFi Registry is not running
[ https://issues.apache.org/jira/browse/NIFI-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16814080#comment-16814080 ]
Charlie Meyer edited comment on NIFI-6201 at 4/10/19 6:06 AM:
--------------------------------------------------------------
Hi [~alopresto]
I'm looking at the output you posted above and it appears that the Connection refused context for why the error is happening is now suppressed. Was that intentional?
I ask because there have been several times in the past few months where the registry being down was noticed via these long stack traces in NiFi and ideally the context of the error could be preserved.
Thanks!
was (Author: cemeyer2):
Hi [~alopresto]
I'm looking at the output you posted above and it appears that the Connection refused context for why the error is happening is now suppressed. Was that intentional?
I ask because there have been several times in the past few months were the registry being down was noticed via these long stack traces in NiFi and ideally the context of the error could be preserved.
Thanks!
> Suppress stacktrace on connection refused when NiFi Registry is not running
> ---------------------------------------------------------------------------
>
> Key: NIFI-6201
> URL: https://issues.apache.org/jira/browse/NIFI-6201
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework, Extensions
> Affects Versions: 1.9.2
> Reporter: Andy LoPresto
> Assignee: Andy LoPresto
> Priority: Major
> Labels: beginner, error, log, registry
> Time Spent: 20m
> Remaining Estimate: 0h
>
> When NiFi is running and the flow has a Registry Client configured to connect to the NiFi Registry, but the Registry instance is not running or is not avzailable, long stacktraces are output in the {{nifi-app.log}}. While these events are important, the long stacktraces are unnecessary as the cause is clear -- "Connection refused". These exceptions should be caught and logged properly.
> Sufficient:
> {code}
> 2019-04-09 19:51:04,100 ERROR [Timer-Driven Process Thread-4] o.a.nifi.groups.StandardProcessGroup Failed to synchronize StandardProcessGroup[identifier=9b59e11e-0169-1000-cb5a-8291e22101f8] with Flow Registry because could not retrieve version 2 of flow with identifier 39ba9057-eaee-4ded-bc61-ce6d4d47d164 in bucket aa2f984d-fca4-4b0b-a5a2-c21b3910d1b6
> java.net.ConnectException: Connection refused (Connection refused)
> {code}
> Unnecessary (current state):
> {code}
> 2019-04-09 19:53:04,121 ERROR [Timer-Driven Process Thread-8] o.a.nifi.groups.StandardProcessGroup Failed to synchronize StandardProcessGroup[identifier=9b59e11e-0169-1000-cb5a-8291e22101f8] with Flow Registry because could not retrieve version 2 of flow with identifier 39ba9057-eaee-4ded-bc61-ce6d4d47d164 in bucket aa2f984d-fca4-4b0b-a5a2-c21b3910d1b6
> java.net.ConnectException: Connection refused (Connection refused)
> at java.net.PlainSocketImpl.socketConnect(Native Method)
> at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
> at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
> at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
> at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
> at java.net.Socket.connect(Socket.java:589)
> at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
> at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
> at sun.net.www.http.HttpClient.<init>(HttpClient.java:242)
> at sun.net.www.http.HttpClient.New(HttpClient.java:339)
> at sun.net.www.http.HttpClient.New(HttpClient.java:357)
> at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220)
> at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156)
> at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050)
> at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984)
> at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564)
> at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
> at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
> at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:390)
> at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:282)
> at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:278)
> at org.glassfish.jersey.client.JerseyInvocation.lambda$invoke$1(JerseyInvocation.java:767)
> at org.glassfish.jersey.internal.Errors.process(Errors.java:316)
> at org.glassfish.jersey.internal.Errors.process(Errors.java:298)
> at org.glassfish.jersey.internal.Errors.process(Errors.java:229)
> at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:414)
> at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:765)
> at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:428)
> at org.glassfish.jersey.client.JerseyInvocation$Builder.get(JerseyInvocation.java:324)
> at org.apache.nifi.registry.client.impl.JerseyFlowSnapshotClient.lambda$get$1(JerseyFlowSnapshotClient.java:104)
> at org.apache.nifi.registry.client.impl.AbstractJerseyClient.executeAction(AbstractJerseyClient.java:71)
> at org.apache.nifi.registry.client.impl.JerseyFlowSnapshotClient.get(JerseyFlowSnapshotClient.java:97)
> at org.apache.nifi.registry.flow.RestBasedFlowRegistry.getFlowContents(RestBasedFlowRegistry.java:206)
> at org.apache.nifi.registry.flow.RestBasedFlowRegistry.getFlowContents(RestBasedFlowRegistry.java:220)
> at org.apache.nifi.groups.StandardProcessGroup.synchronizeWithFlowRegistry(StandardProcessGroup.java:3258)
> at org.apache.nifi.controller.FlowController$5.run(FlowController.java:820)
> at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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