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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDDS-707) Allow registering MBeans without additional jmx properties
Date Mon, 22 Oct 2018 05:48:00 GMT

    [ https://issues.apache.org/jira/browse/HDDS-707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16658597#comment-16658597
] 

Anu Engineer commented on HDDS-707:
-----------------------------------

That is a beautiful change. Thank you. +1.


> Allow registering MBeans without additional jmx properties
> ----------------------------------------------------------
>
>                 Key: HDDS-707
>                 URL: https://issues.apache.org/jira/browse/HDDS-707
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>          Components: OM, Ozone Datanode, SCM
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>            Priority: Blocker
>         Attachments: HDDS-707.01.patch, HDDS-707.02.patch, HDDS-707.03.patch
>
>
> HDDS and Ozone use the MBeans.register overload added by HADOOP-15339. This is missing
in Apache Hadoop 3.1.0 and earlier. This prevents us from building Ozone with earlier versions
of Hadoop. More commonly, we see runtime exceptions if an earlier version of the Hadoop-common
jar happens to be in the classpath.
> Let's add a reflection-based switch to invoke the right version of the API so we can
build and use Ozone with Apache Hadoop 3.1.0.



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