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From "Kumar Ravi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-6965) Generic MXBean Utility class to support all JDK vendors
Date Tue, 09 Oct 2012 20:50:02 GMT
Kumar Ravi created HBASE-6965:
---------------------------------

             Summary: Generic MXBean Utility class to support all JDK vendors
                 Key: HBASE-6965
                 URL: https://issues.apache.org/jira/browse/HBASE-6965
             Project: HBase
          Issue Type: Improvement
          Components: build
    Affects Versions: 0.94.1
            Reporter: Kumar Ravi
            Assignee: Kumar Ravi
             Fix For: 0.94.3


This issue is related to JIRA https://issues.apache.org/jira/browse/HBASE-6945. This issue
is opened to propose the use of a newly created generic org.apache.hadoop.hbase.util.OSMXBean
class that can be used by other classes. JIRA HBASE-6945 contains a patch for the class org.apache.hadoop.hbase.ResourceChecker
that uses OSMXBean. With the inclusion of this new class, HBase can be built and become functional
with JDKs and JREs other than what is provided by Oracle.

 This class uses reflection to determine the JVM vendor (Sun, IBM) and the platform (Linux
or Windows), and contains other methods that return the OS properties - 1. Number of Open
File descriptors;  2. Maximum number of File Descriptors.

 This class compiles without any problems with IBM JDK 7, OpenJDK 6 as well as Oracle JDK
6. Junit tests (runDevTests category) completed without any failures or errors when tested
on all the three JDKs.The builds and tests were attempted on branch hbase-0.94 Revision 1396305.



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