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From "Yoonmin Nam" <rony...@dgist.ac.kr>
Subject Changing code is not affect
Date Tue, 24 Dec 2013 02:56:02 GMT
Hello, everyone!


I changed the tasktracker.java especially adding special LOG for debugging.

(in main function in TaskTracker.java, I added "LOG.info("Hello!");")


Also, I changed the content of log in TaskTracker.initialize().

(LOG.info("Starting tasktracker with owner as "+


(LOG.info("SSSSSSSSSSStarting tasktracker with owner as "+


And then, using ant jar command, I compiled hadoop source code, and then
redistributed hadoop-core-1.2.1.jar to my cluster nodes.


I re-started my dfs and mapred, then I checked the log file of
TaskTracker.log in my worker node's log directory.


However, it just showed the original log contents, not revised content by

(It shows "2013-12-24 11:50:01,690 INFO
org.apache.hadoop.mapred.TaskTracker: Starting tasktracker with owner as


Please give me a hand to solve this problem.



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