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Posted to dev@ambari.apache.org by "Dmitry Lysnichenko (JIRA)" <ji...@apache.org> on 2015/04/03 17:41:53 UTC

[jira] [Created] (AMBARI-10350) Ambari UI for HBase config incorrectly describes the -Xmn config

Dmitry Lysnichenko created AMBARI-10350:
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             Summary: 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


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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