datanode cannot start with default hadoop-env.sh in secure mode

conf/hadoop-env.sh contains the following by default:

export HADOOP_OPTS=' -server -Djava.net.preferIPv4Stack=true'

This causes the datanode service to fail to start:

root:~# service hadoop-0.20-datanode start
Starting Hadoop datanode daemon (hadoop-datanode): starting datanode, logging to ...
22/11/2011 17:22:43 7038 jsvc error: Invalid option -server
22/11/2011 17:22:43 7038 jsvc error: Cannot parse command line arguments
[FAIL]

This is on a Linux-amd64-64 architecture. You are bundling jsvc v1.0.2, which may not support -server. The current version of jsvc (1.0.7) explicitly lists -server in the arguments it supports. I think you may need to upgrade the jsvc version installed in the default package. As a workaround, I removed -server from my argument list in hadoop-env.sh and it successfully got past that point.