2 days ago i have met the same problem. It is because java can't allocate
memory to call it )
After that i was playing with -Xmx options for this variables in
hadoop-env.sh, and now they are:
export HADOOP_HEAPSIZE=1000
export HADOOP_NAMENODE_OPTS="-Xmx612 -Dcom.sun.management.jmxremote
$HADOOP_NAMENODE_OPTS"
export HADOOP_SECONDARYNAMENODE_OPTS="-Xmx412
-Dcom.sun.management.jmxremote $HADOOP_SECONDARYNAMENODE_OPTS"
export HADOOP_DATANODE_OPTS="-Xmx412 -Dcom.sun.management.jmxremote
$HADOOP_DATANODE_OPTS"
export HADOOP_BALANCER_OPTS="-Xmx412 -Dcom.sun.management.jmxremote
$HADOOP_BALANCER_OPTS"
export HADOOP_JOBTRACKER_OPTS="-Xmx412 -Dcom.sun.management.jmxremote
$HADOOP_JOBTRACKER_OPTS"
export HADOOP_TASKTRACKER_OPTS="-Xmx412"
export HADOOP_CLIENT_OPTS="-Xmx512"
and whoami called perfectly.
I have 3.5 G RAM on master, 2.0 G RAM on slave )
I am running Hadoop-0.20.1 on a Solaris box with dfs.permissions set to
false.
There is a working version of whoami on the system.
Folders and files created by my program show up with an owner of DrWho.
Folders and files created by Hbase-0.20.1 appear with the proper owner
name.
Do I need to move the whoami command someplace where map/reduce jobs can
find it?
Bill
