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https://issues.apache.org/jira/browse/NIFI-6201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16814113#comment-16814113
]
Andy LoPresto commented on NIFI-6201:
-------------------------------------
With the message added back, the output looks like:
{code}
2019-04-09 23:36:47,906 INFO [main] org.apache.nifi.NiFi Controller
initialization took 20908993106 nanoseconds (20 seconds).
2019-04-09 23:36:49,461 ERROR [Timer-Driven Process Thread-4]
o.a.nifi.groups.StandardProcessGroup Failed to synchronize
StandardProcessGroup[identifier=cc0f2d21-0169-1000-858f-1e4106731707] with Flow
Registry because could not retrieve version 1 of flow with identifier
8bb7dcc8-5be1-4451-bf42-2d9c3e08081c in bucket
aa2f984d-fca4-4b0b-a5a2-c21b3910d1b6 due to: Connection refused (Connection
refused)
2019-04-09 23:36:49,462 ERROR [Timer-Driven Process Thread-4]
o.a.nifi.groups.StandardProcessGroup Failed to synchronize
StandardProcessGroup[identifier=9b4d4f85-0169-1000-8bfd-c8c29fc71447] with Flow
Registry because could not retrieve version 2 of flow with identifier
ac66d0ae-2568-489e-aee7-176d0be74606 in bucket
aa2f984d-fca4-4b0b-a5a2-c21b3910d1b6 due to: Connection refused (Connection
refused)
2019-04-09 23:36:49,463 ERROR [Timer-Driven Process Thread-4]
o.a.nifi.groups.StandardProcessGroup Failed to synchronize
StandardProcessGroup[identifier=9b3b1bba-0169-1000-5910-3a1883ce6f36] with Flow
Registry because could not retrieve version 2 of flow with identifier
932bb11a-cfcc-4b0f-927b-8dd2e5010ced in bucket
aa2f984d-fca4-4b0b-a5a2-c21b3910d1b6 due to: Connection refused (Connection
refused)
2019-04-09 23:36:49,464 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 due to: Connection refused (Connection
refused)
{code}
> 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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