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.
