On Tue, Jul 31, 2012 at 7:26 PM, Michael Segel <michael_se...@hotmail.com> wrote: > Hi Stan, > > If I understood your question... you want to ship a jar to the nodes where > the task will run prior to the start of the task? > > Not sure what it is you're trying to do... > Your example isn't really clear.
Correct. I want to ship a jar to the task, but I need to know its absolute path before the task jvm is launched. As an example, -javaagent JVM option expects a jar path. > > See: > http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/hadoop/filecache/DistributedCache.html > > When you pull stuff out of the cache you get the path to the jar. > Or you should be able to get it. > It would be too late at that point; the task tracker controls the launching of the JVM. The path of the shipped jar need to be available before the task is launched. > Can you give a better example, there may be a different way to handle this... > Does the example above make sense?
