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Posted to dev@lucene.apache.org by "Shawn Heisey (JIRA)" <ji...@apache.org> on 2013/03/04 20:17:12 UTC
[jira] [Commented] (SOLR-4526) Admin UI dependence on
UnixOperationSystemMXBean
[ https://issues.apache.org/jira/browse/SOLR-4526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13592519#comment-13592519 ]
Shawn Heisey commented on SOLR-4526:
------------------------------------
If File descriptor info just isn't available in OpenJDK, then that is life. The file descriptor problem seems to be causing another problem - the JVM memory info isn't showing up on the dashboard. I haven't looked at the code yet, and I don't know javascript very well, but the user suspects that when the file descriptor info is not found, it causes the code that puts the JVM memory info together to be skipped.
> 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
>
> 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-6495, the same problem with OpenJDK.
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