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https://issues.apache.org/jira/browse/NIFI-15425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18050438#comment-18050438
]
Nissim Shiman commented on NIFI-15425:
--------------------------------------
Log in nifi-app.log, running 2.7.1 RC2:
{code}
2026-01-07 16:47:58,625 ERROR [Timer-Driven Process Thread-30]
o.a.nifi.remote.StandardRemoteGroupPort RemoteGroupPort[name=<output port
name>,targets=https://<machine name>:<port>/nifi] failed to communicate with
https://<machine name>:<port>/nifi due to java.io.IOException: Unexpected
response code: 406 errCode:Abort errMessage:HTTP 406 Not Acceptable
2026-01-07 16:47:58,625 ERROR [Timer-Driven Process Thread-30]
o.a.nifi.remote.StandardRemoteGroupPort RemoteGroupPort[name=<output port
name>,targets=https://<machine name>:<port>/nifi] Processing failed
org.apache.nifi.processor.exception.ProcessException: java.io.IOException:
Unexpected response code: 406 errCode:Abort errMessage:HTTP 406 Not Acceptable
at
org.apache.nifi.remote.StandardRemoteGroupPort.onTrigger(StandardRemoteGroupPort.java:254)
at
org.apache.nifi.controller.AbstractPort.onTrigger(AbstractPort.java:260)
at
org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:229)
at
org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:102)
at org.apache.nifi.engine.FlowEngine.lambda$wrap$1(FlowEngine.java:105)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
at
java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:358)
at
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.io.IOException: Unexpected response code: 406 errCode:Abort
errMessage:HTTP 406 Not Acceptable
at
org.apache.nifi.remote.util.SiteToSiteRestApiClient.handleErrResponse(SiteToSiteRestApiClient.java:501)
at
org.apache.nifi.remote.util.SiteToSiteRestApiClient.openConnectionForReceive(SiteToSiteRestApiClient.java:391)
at
org.apache.nifi.remote.protocol.http.HttpClientTransaction.initialize(HttpClientTransaction.java:51)
at
org.apache.nifi.remote.client.http.HttpClient.createTransaction(HttpClient.java:209)
at
org.apache.nifi.remote.StandardRemoteGroupPort.onTrigger(StandardRemoteGroupPort.java:224)
... 10 common frames omitted
{code}
> Remote PG unable to receive from remote port when using HTTP
> ------------------------------------------------------------
>
> Key: NIFI-15425
> URL: https://issues.apache.org/jira/browse/NIFI-15425
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 2.7.0, 2.7.2
> Reporter: Nissim Shiman
> Assignee: Nissim Shiman
> Priority: Critical
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Remote PG is unable to receive data from a remote port when transport
> protocol is HTTP.
> When transport protocol is RAW, this is not an issue.
> This is not an issue for 2.6.0.
> The logs greatly increase when this occurs (200MB per minute for
> nifi-user.log, 40MB per minute for nifi-app.log).
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