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From "Dmitry Lysnichenko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-10350) Ambari UI for HBase config incorrectly describes the -Xmn config
Date Fri, 03 Apr 2015 15:43:52 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-10350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dmitry Lysnichenko updated AMBARI-10350:
----------------------------------------
    Attachment: AMBARI-10350.patch

> Ambari UI for HBase config incorrectly describes the -Xmn config
> ----------------------------------------------------------------
>
>                 Key: AMBARI-10350
>                 URL: https://issues.apache.org/jira/browse/AMBARI-10350
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>            Reporter: Dmitry Lysnichenko
>            Assignee: Dmitry Lysnichenko
>             Fix For: 2.1.0
>
>         Attachments: AMBARI-10350.patch
>
>
> Ambari GUI for HBase config incorrectly describes the -Xmn as the “maximum value for
the minimum heap size”, which is incorrect. Xmn is the size of the heap for the young generation.
> If somebody new to Java just reads the Ambari description and set both Xmn and Xmx to
the same value, HBase will start but it will perform miserably. Please fix the documentation
for the two settings in Ambari GUI that refer to Xmx (the ratio and the static value)



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