On MacOSX - 10.7.3, Java 1.6, using hello samza deploying a samza job -
(deploy/samza/bin/run-job.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/wikipedia-feed.properties)
leads to "Unable to load realm mapping info from SCDynamicStore"
Debugging this leads to similarities in
HADOOP-7489 and in turn to JRE issue (fixed in Java 7).
It would be good to either have an inbuilt workaround for it or atleast document it on http://samza.incubator.apache.org/startup/hello-samza/0.7.0/ to avoid confounding new users on hello samza.