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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SOLR-4526) Admin UI dependence on UnixOperationSystemMXBean
Date Mon, 04 Mar 2013 21:07:15 GMT

     [ https://issues.apache.org/jira/browse/SOLR-4526?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hoss Man reassigned SOLR-4526:
------------------------------

    Assignee: Stefan Matheis (steffkes)

Felix: can you confirm no errors in the server logs, just javacsript was having problems from
the null keys?

asigning to steffkes in the hopes that he can take a look -- but based on the screen shot
i'm not really sure what if anything it could do better in a situation like this -- if the
values aren't available from the JVM, showing "blank" bar sharts seems as good an option as
any ... i guess maybe labeling them with "?" could be a little better though.
                
> Admin UI dependence on UnixOperationSystemMXBean
> ------------------------------------------------
>
>                 Key: SOLR-4526
>                 URL: https://issues.apache.org/jira/browse/SOLR-4526
>             Project: Solr
>          Issue Type: Bug
>          Components: web gui
>    Affects Versions: 4.1
>         Environment: Oracle Corporation OpenJDK 64-Bit Server VM (1.7.0_15 23.7-b01)
>            Reporter: Shawn Heisey
>            Assignee: Stefan Matheis (steffkes)
>         Attachments: built-in-jetty8.png, ubuntu-jetty6.png
>
>
> A user on IRC was having trouble getting file descriptor counts and JVM memory usage
in the admin UI, but it worked perfectly fine on another system.  The problem system uses
OpenJDK, the other one uses the Apple JDK.  The user had tracked it down to an exception while
trying to get open file descriptor info.
> Looking in the SystemInfoHandler.java file, I see a comment reference to com.sun.management.UnixOperatingSystemMXBean
at the point where it is getting file descriptor info.  A little extra searching turned up
ZOOKEEPER-1579 which refers to HBASE-6945, the same problem with OpenJDK.

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