Another newbie question.
Suppose I want to use an external library (jar) in the mapper / reducer
(commons-lang, google's guava, etc.)
In our environment, I added the jars into a specific folder and added them
However, when running mapper that uses one of the jars, it could not find
the classes in that jar.
I thought that it might be in our environment (I am not managing our
Then I read about DistributedCache.
Should I use it with methods such as addArchiveToClassPath,
addFileToClassPath, addCachArchive to use jar libraries?
If so, which method is more appropriate ?
If not, how do we load jar libraries to each VM?
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