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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14347) Make KMS and HttpFS Jetty connection backlog configurable
Date Tue, 25 Apr 2017 05:13:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15982372#comment-15982372
] 

Wei-Chiu Chuang commented on HADOOP-14347:
------------------------------------------

Hi [~jzhuge] thanks for raising the issue and posting a patch.
If I understand it correctly, the change proposed in the patch is not just limited to KMS
and HttpFS, but applicable to anything that uses Httpserver2.

I think you should also consider adding hadoop.http.accept.queue.size into kms-default.xml
and httpfs-default.xml 

> Make KMS and HttpFS Jetty connection backlog configurable
> ---------------------------------------------------------
>
>                 Key: HADOOP-14347
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14347
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: kms
>    Affects Versions: 3.0.0-alpha2
>            Reporter: John Zhuge
>            Assignee: John Zhuge
>         Attachments: HADOOP-14347.001.patch
>
>
> HADOOP-14003 enabled the customization of Tomcat attribute {{protocol}}, {{acceptCount}},
and {{acceptorThreadCount}} for KMS in branch-2. See https://tomcat.apache.org/tomcat-6.0-doc/config/http.html.
> KMS switched from Tomcat to Jetty in trunk. Only {{acceptCount}} has a counterpart in
Jetty, {{acceptQueueSize}}. See http://www.eclipse.org/jetty/documentation/9.3.x/configuring-connectors.html.



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