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https://issues.apache.org/jira/browse/NIFI-4143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16077114#comment-16077114
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ASF subversion and git services commented on NIFI-4143:
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Commit a3b72f1bb7435f987a618eda85008d187332ad21 in nifi's branch
refs/heads/master from [~pvillard]
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=a3b72f1 ]
NIFI-4143 - externalize MAX_CONCURRENT_REQUESTS. This closes #1962
> Make configurable maximum number of concurrent requests
> -------------------------------------------------------
>
> Key: NIFI-4143
> URL: https://issues.apache.org/jira/browse/NIFI-4143
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Pierre Villard
> Assignee: Pierre Villard
> Labels: documentation
>
> At the moment, the maximum number of concurrent requests is hard coded in
> {{ThreadPoolRequestReplicator}}
> https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-cluster/src/main/java/org/apache/nifi/cluster/coordination/http/replication/ThreadPoolRequestReplicator.java
> The value is equal to 100.
> In some situations where multiple factors are combined (large cluster, S2S to
> load balance data in the cluster, multiple users accessing the UI), the limit
> can be reached and the UI may become intermittently unavailable with the
> message: "There are too many outstanding HTTP requests with a total 100
> outstanding requests".
> This value should be configurable in nifi.properties allowing users to
> increase the value.
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