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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "HadoopJavaVersions" by MattFoley
Date Fri, 29 Jun 2012 22:15:34 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The "HadoopJavaVersions" page has been changed by MattFoley:
http://wiki.apache.org/hadoop/HadoopJavaVersions?action=diff&rev1=25&rev2=26

   ||[[http://www.oracle.com/technetwork/java/javase/downloads/jdk6-jsp-136632.html|1.6.0_21]]
||Good (2)||Yahoo!, Cloudera ||
   ||1.6.0_24 || Good || Cloudera ||
   ||1.6.0_26 || Good(2) || Hortonworks, Cloudera ||
-  ||1.6.0_31 || Good(2) || Cloudera, Hortonworks ||
+  ||1.6.0_31 || Good(3) || Cloudera, Hortonworks ||
  
  1 - Hadoop works well with update 16 however there is a bug in JDK versions before update
19 that has been seen on HBase. See [[https://issues.apache.org/jira/browse/HBASE-4367|HBASE-4367]]
for details.
  
  2 - If the grid is running in secure mode with MIT Kerberos 1.8 and higher, the Java version
should be 1.6.0_27 or higher in order to avoid [[http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6979329|Java
bug 6979329]].
+ 
+ 3 - Hortonworks has certified JDK 1.6.0_31 under RHEL5/CentOS5, RHEL6/CentOS6, and SLES11,
with Hadoop, HBase, Pig, Hive, HCatalog, Oozie, Sqoop, and Ambari.
  
  The Sun JVM has 32-bit and 64-bit modes. In a large cluster the NameNode and JobTracker
need to run in 64-bit mode to keep all their data structures in memory. The workers can be
set up for either 32-bit or 64-bit operation, depending upon preferences and how much memory
the individual tasks need.
  

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