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https://issues.apache.org/jira/browse/NIFI-1301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15064636#comment-15064636
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Oleg Zhurakousky commented on NIFI-1301:
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It appears that the patch addresses the issue. RPG stops and log messages do
not appear.
> RPG can become hung when input port on target NiFi does not accept files
> because of backpressure
> ------------------------------------------------------------------------------------------------
>
> Key: NIFI-1301
> URL: https://issues.apache.org/jira/browse/NIFI-1301
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 0.4.0
> Reporter: Matthew Clarke
> Assignee: Oleg Zhurakousky
> Fix For: 0.4.1
>
> Attachments:
> 0001-NIFI-1301-Ensure-that-when-creating-site-to-site-con.patch,
> dumpRPGHang.log, make_badness_happen_with_site-to-site.xml
>
>
> If i have an RPG sending to a input port on another NiFi and that input port
> is no longer accepting files because of backpressure on the input port
> connection, the sending NiFi starts logging that the destination port is full.
> The potential problem is that it create a log message for every file that is
> queueing up on the connection(s) feeding that RPG destination input port.
> This logging seems excess.
>
> The critical issue:
> Also when i select "disable transmission" I get the spinning wheel but thread
> does not complete. Entire instance is now unresponsive.
> Even though it became hung on request to disable transmission, on restart it
> started running again. Hung again.
> The only options for regaining control is to either restart with auto resume
> state set to false or take back pressure off destination input port so thread
> can complete.
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