A Community for Hadoop Users
Discussion Forum (67)
| Discussions | Replies | Latest Activity |
|---|---|---|
Legacy code running in mapperHi, I'm trying to move my legacy data procfessing code to hadoop. My issue is the legacy code relies on local file system - it both reads… Started by yigang chen |
3 |
10 hours ago Reply by Jason Venner |
hadoop or mysql?hi,i'm working on a data warehouse and am deciding whether to use hadoop or mysql.the dataset is currently likely to be no bigger than 40gb… Started by sanjo cole |
1 |
10 hours ago Reply by Jason Venner |
how could i setup a hadoop source project?hi, i am new to this forum.when i read the book "OReilly.Hadoop.The.Definitive.Guide.pdf", i found many interesting examples, and i want to… Started by dachuan huang |
3 |
Mar 8 Reply by dachuan huang |
do all mappers finish before reducer startsI just have a conceptual question. My understanding is that all the mappers have to complete their job for the reducers to start working be… Started by Adeel |
5 |
Mar 7 Reply by dachuan huang |
Hadoop for masters project.hello all,I am new with hadoop I am reading books as per suggested in forum. I want some serious help with hadoop. I am planing to do my ma… Started by Prajyot Bankade |
1 |
Feb 21 Reply by Jason Venner |
Launching a shell command in reduce method with JavaHi guys,We're some students of University of Fisciano(SA-Italy). We're wrinting a MapReduce program for a chemistry problem and we need to… Started by Aprile Matteo |
3 |
Feb 21 Reply by Jason Venner |
clarification on hadoop....i have benn looking into hadoop as i am interested in serch engines..and i learnt that it is pretty good at parallelising jobs and map redu… Started by nijil |
3 |
Feb 20 Reply by Jason Venner |
Type mismatch errorHi All, I am a beginner of Hadoop. I modified the Inverted Index Code in Yahoo's Tutorial (http://developer.yahoo.com/hadoop/tutorial/mod… Started by Zhiqiang Ma |
2 |
Feb 8 Reply by Zhiqiang Ma |
How to run and writting program on cluster?I writed program count website from log file which I send parameter when run program( bin/hadoop jar webcount.jar WebCount webtudom.log out… Started by Saranyu Netmanee |
0 | Feb 4 |
help on hadoop for a beginneri have read about basic stuff about hadoop..err i have a few douts...mind u am a begginer 1:so is hadoop a file sytem only? 2:can hbase b… Started by nijil |
1 |
Feb 3 Reply by Jason Venner |
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