Owen,
Thank you for the corrections and single node
properties suggestion for hadoop-site.xml.
Since I'm also running Apache Tomcat, Web server and
James mail server the JAVA_HOME improvement will
provide benefits across the board.
I still need to set JAVA_PLATFORM on a dual, 2GHZ PowerPC
with 2GB DDR2 sdram but will try to resolve and give an update.
My primary Hadoop cluster will on be Intel based mac minis and
once that's working I will put up a 'howto' on the wiki including
firewall configuration.
Thanks again,
Peter W.
On May 31, 2007, at 3:35 PM, Owen O'Malley wrote:
On May 30, 2007, at 12:15 PM, Peter W. wrote:
There are some steps needed to get Hadoop working on
Mac OSX Tiger 10.4.x as single node, here they are:
On my powerbook (with OS X 10.4.9), I find it much better to use:
export JAVA_HOME=/Library/Java/Home
instead, (as a kludge) use sudo or root to copy jar files to
/Library/Java Extensions:
that's strange, I've never had to move files into the system
directories.
in /opt/hadoop-0.12.3/bin/hadoop make these changes:
JAVA=$JAVA_HOME/java
#JAVA=$JAVA_HOME/bin/java
with a better JAVA_HOME, this shouldn't be necessary and I also
don't need to set JAVA_PLATFORM.
For a single node system, you also want to set in hadoop-site.xml:
<property>
<name>dfs.safemode.extension</name>
<value>0</value>
</property>
to keep the namenode from waiting 30 seconds for the "rest" of the
datanodes to report in before it leaves safemode.
