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What version of Hadoop are you using ? Thanks On Oct 6, 2013, at 8:56 PM, 남윤민 <rony...@dgist.ac.kr> wrote: > Hello!! > My name is Yoonmin Nam from South Korea. > > Currently, I am trying to debug namenode and datanode using eclipse and > fully-distributed environemnt in my lab. (1 master and 10 nodes) > > However, I can do debug but not fully, just some portion of source code of > hadoop. > > This means I cannot see how some daemon thread such as DataStreamer. > Also, I want to see how NameNode thread and DataNode thread work but I can't. > > As you can see, there is Daemon thread (Thre ad-2) and it might be > DataStreamer thread but.. I can't see. > > > > > So, I think everyone in the hdfs-dev have very professional experience in > developing HDFS and MapReduce and I want to ask you about how can I see all > real daemons are working for academic reason. > > Even you have no idea about it, may I ask you that how you test your > implementation of HDFS or MapReduce? > > > Thanks!! > > > > > > // Yoonmin Nam >