ramon, Thank for your reply very much.
However, I was still wonder whether I could debug a MR application in this way. I have read some posts talking about using NAT to redirect all the packets to the network card which connect to the local LAN, but it does not work as I tried to redirect by using iptables :( 在 2012年7月4日星期三， 写道： > Jason, > > > the easiest way to debug a MapRedupe program with eclipse is working > on hadoop local. > http://hadoop.apache.org/common/docs/r0.20.2/quickstart.html#Local In > this mode all the components run locally on the same VM and can be easily > debugged using Eclipse. Hope this will be useful. > > > > *From:* Jason Yang [mailto:lin.yang.ja...@gmail.com <javascript:_e({}, > 'cvml', 'lin.yang.ja...@gmail.com');>] > *Sent:* miércoles, 04 de julio de 2012 11:25 > *To:* mapreduce-user > *Subject:* How to connect to a cluster by using eclipse > > > > Hi, all > > > > I have a hadoop cluster with 3 nodes, the network topology is like this: > > 1. For each DataNode, its IP address is like :192.168.0.XXX; > > 2. For the NameNode, it has two network cards: one is connect with the > DataNodes as a local LAN with IP address 192.168.0.110, while the other one > is connect to the company network(which eventually connect to the Internet); > > -- > > now I'm trying to debug a MapReduce program on a computer which is in the > company network. Since the jobtracker in this scenario is > 192.168.0.110:9001, I was wondering how could I connect to the cluster by > using eclipse? > > > > -- > > YANG, Lin > > > > ------------------------------ > Subject to local law, communications with Accenture and its affiliates > including telephone calls and emails (including content), may be monitored > by our systems for the purposes of security and the assessment of internal > compliance with Accenture policy. > > ______________________________________________________________________________________ > > www.accenture.com > -- YANG, Lin
