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https://issues.apache.org/jira/browse/YARN-1703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13950552#comment-13950552
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Rohith commented on YARN-1703:
------------------------------
I am attaching connection established for accesing 1 application master ui. On
every manuall refresh , it is incrementing more than 30 connections.
{noformat}
host-10-18-40-71:/home/OpenSource/hadoop-3.0.0-SNAPSHOT/sbin # netstat -tnpla |
grep <ProxyServer_PID>
tcp 0 0 0.0.0.0:4996 0.0.0.0:* LISTEN
27664/java
tcp 0 0 10.18.40.71:45029 :::* LISTEN
27664/java
tcp 1 0 10.18.40.71:58696 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 1 0 10.18.40.71:10375 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 1 0 10.18.40.71:27934 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:29802 10.18.40.77:45022 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:43589 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45347 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:10980 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:37156 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:37989 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:18116 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:50766 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 1 0 10.18.40.71:18836 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 1 0 10.18.40.71:19376 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 1 0 10.18.40.71:25214 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:54847 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:12605 ESTABLISHED
27664/java
tcp 1 0 10.18.40.71:50339 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:49870 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:50956 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 1 0 10.18.40.71:16896 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:43026 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:12091 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:49205 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:29968 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 1 0 10.18.40.71:34355 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:54701 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:47084 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:32938 ESTABLISHED
27664/java
tcp 1 0 10.18.40.71:28034 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 1 0 10.18.40.71:40430 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:56572 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:60771 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:39165 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:20341 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 1 0 10.18.40.71:22649 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 1 0 10.18.40.71:23049 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:52172 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:57790 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:17880 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:22911 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:52107 10.18.40.71:56297 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:38345 ESTABLISHED
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:40127 ESTABLISHED
27664/java
tcp 1 0 10.18.40.71:18287 10.18.40.71:56297 CLOSE_WAIT
27664/java
tcp 0 0 10.18.40.71:45029 10.18.40.77:30754 ESTABLISHED
27664/java
{noformat}
> Too many connections are opened for proxy server when applicationMaster UI is
> accessed.
> ---------------------------------------------------------------------------------------
>
> Key: YARN-1703
> URL: https://issues.apache.org/jira/browse/YARN-1703
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.3.0
> Reporter: Rohith
> Assignee: Rohith
> Priority: Critical
> Attachments: YARN-1703.1.patch
>
>
> If running job is accessed for progress. there many CLOSE_WAIT connections
> for proxyserver. Eventhough connection is released, it makes available
> again to the HttpClient instance, but does not close it.
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