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Subject: Re: Question about the classpath setting for bin/hadoop jar
Date: Thu, 16 Apr 2009 23:50:03 -0700
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Thread-Topic: Question about the classpath setting for bin/hadoop jar
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From: "Sharad Agarwal" <sharadag@yahoo-inc.com>
To: <core-user@hadoop.apache.org>

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> I noticed that the "bin/hadoop jar" command doesn't add the jar being =
executed to the classpath. Is this deliberate and what is the reasoning? =
The result is that resources in the jar are not accessible from the =
system class loader. Rather they are only available from the thread =
context class loader and the class loader of the main class.
In map and reduce tasks' jvm,  job libraries are added to the system =
classloader. However for others only framework code is present in system =
classloader. If you are seeing this as a problem in your client side =
code, you can use Configuration#getClassByName(String name) instead of =
Class.forName() for loading your job related classes.

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