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https://issues.apache.org/jira/browse/NIFI-3317?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jeff Storck resolved NIFI-3317.
-------------------------------
    Resolution: Not A Problem

Increasing socket timeouts resolves this, I was not able to determine a deeper 
issue.

> Under load, ThreadPoolRequestReplicator is experiencing 
> SocketTimeoutExceptions
> -------------------------------------------------------------------------------
>
>                 Key: NIFI-3317
>                 URL: https://issues.apache.org/jira/browse/NIFI-3317
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.1.0
>            Reporter: Jeff Storck
>            Assignee: Jeff Storck
>
> In a cluster under load (4 nodes, ~80 active threads per node) requests for 
> starting and stopping processors (and, for example, the timed UI thread 
> requesting status) can fail due to socket timeouts during request 
> replication.  Sometimes, this results in a dialog shown on the UI that has a 
> title of "Update Resource", but the dialog itself is empty.
> {code}2017-01-10 17:46:21,878 INFO [StandardProcessScheduler Thread-8] 
> o.a.n.c.s.TimerDrivenSchedulingAgent Stopped scheduling 
> GenerateFlowFile[id=87de49bc-0158-1000-6329-33d0dd20bd3a] to run
> 2017-01-10 17:46:21,921 WARN [Replicate Request Thread-9] 
> o.a.n.c.c.h.r.ThreadPoolRequestReplicator Failed to replicate request PUT 
> /nifi-api/processors/87dd1f69-0158-1000-0e85-aaf63af20c89 to m10wn03.local
> domain:9091 due to {}
> com.sun.jersey.api.client.ClientHandlerException: 
> java.net.SocketTimeoutException: Read timed out
>         at 
> com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:155)
>  ~[jersey-client-1.19.jar:1.19]
>         at com.sun.jersey.api.client.Client.handle(Client.java:652) 
> ~[jersey-client-1.19.jar:1.19]
>         at 
> com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:123)
>  ~[jersey-client-1.19.jar:1.19]
>         at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682) 
> ~[jersey-client-1.19.jar:1.19]
>         at 
> com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) 
> ~[jersey-client-1.19.jar:1.19]
>         at 
> com.sun.jersey.api.client.WebResource$Builder.put(WebResource.java:529) 
> ~[jersey-client-1.19.jar:1.19]
>         at 
> org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator.replicateRequest(ThreadPoolRequestReplicator.java:590)
>  ~[nifi-framework-cluster-1.1.0.jar:1.1.0]
>         at 
> org.apache.nifi.cluster.coordination.http.replication.ThreadPoolRequestReplicator$NodeHttpRequest.run(ThreadPoolRequestReplicator.java:770)
>  ~[nifi-framework-cluster-1.1.0.jar:1.1.0]
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> [na:1.8.0_111]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
> [na:1.8.0_111]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  [na:1.8.0_111]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  [na:1.8.0_111]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]
> Caused by: java.net.SocketTimeoutException: Read timed out
>         at java.net.SocketInputStream.socketRead0(Native Method) 
> ~[na:1.8.0_111]
>         at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) 
> ~[na:1.8.0_111]
>         at java.net.SocketInputStream.read(SocketInputStream.java:170) 
> ~[na:1.8.0_111]
>         at java.net.SocketInputStream.read(SocketInputStream.java:141) 
> ~[na:1.8.0_111]
>         at sun.security.ssl.InputRecord.readFully(InputRecord.java:465) 
> ~[na:1.8.0_111]
>         at sun.security.ssl.InputRecord.read(InputRecord.java:503) 
> ~[na:1.8.0_111]
>         at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:973) 
> ~[na:1.8.0_111]
>         at 
> sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:930) 
> ~[na:1.8.0_111]
>         at sun.security.ssl.AppInputStream.read(AppInputStream.java:105) 
> ~[na:1.8.0_111]
>         at java.io.BufferedInputStream.fill(BufferedInputStream.java:246) 
> ~[na:1.8.0_111]
>         at java.io.BufferedInputStream.read1(BufferedInputStream.java:286) 
> ~[na:1.8.0_111]
>         at java.io.BufferedInputStream.read(BufferedInputStream.java:345) 
> ~[na:1.8.0_111]
>         at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:704) 
> ~[na:1.8.0_111]
>         at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:647) 
> ~[na:1.8.0_111]
>         at 
> sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1569)
>  ~[na:1.8.0_111]
>         at 
> sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
>  ~[na:1.8.0_111]
>         at 
> java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480) 
> ~[na:1.8.0_111]
>         at 
> sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
>  ~[na:1.8.0_111]
>         at 
> com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:253)
>  ~[jersey-client-1.19.jar:1.19]
>         at 
> com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:153)
>  ~[jersey-client-1.19.jar:1.19]
>         ... 12 common frames omitted{code}



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