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From "Chris Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10285) Admin interface to swap callqueue at runtime
Date Fri, 28 Feb 2014 00:42:19 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-10285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Li updated HADOOP-10285:
------------------------------

    Attachment: HADOOP-10285.patch

Okay, here's 10285, adding the comment

On closer inspection, a true end to end test would be difficult, because refreshCallQueue()
has a void response, so we'd have to go digging around in the server's internals to verify
(we'd have to add more @visibleForTesting getters)

We can open another issue to refactor the refresh*protos into one generic RefreshConfigurationProto,
which can provide a return value indicating success or failure. This will also make testing
easier to do.

Let me know if that's okay.

> Admin interface to swap callqueue at runtime
> --------------------------------------------
>
>                 Key: HADOOP-10285
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10285
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Chris Li
>         Attachments: HADOOP-10285.patch, HADOOP-10285.patch, HADOOP-10285.patch, HADOOP-10285.patch,
bisection-test.patch, bisection-test.patch, bisection-test.patch, bisection-test.patch, bisection-test.patch
>
>
> We wish to swap the active call queue during runtime in order to do performance tuning
without restarting the namenode.
> This patch adds the ability to refresh the call queue on the namenode, through dfsadmin
-refreshCallQueue



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