Re: Binary Search in map reduce

2013-01-08 Thread jamal sasha
:) Great. Thanks for the input. :) On Mon, Jan 7, 2013 at 3:31 PM, Pamecha, Abhishek apame...@ebay.com wrote: You will incur the cost of map reduce across all nodes in your cluster anyways. Not sure, you will get enough speed advantage. HBase may help you get close to what you are

UnsupportedActionException when start balancer in hadoop-2.0.2 alpha

2013-01-08 Thread pengwenwu2008
Hi all, does anyone get UnsupportedActionException when start balancer in hadoop-2.0.2 alpha? any file need to configure for balancer? starting balancer, logging to /hadoop/hadoop-2.0.2/logs/hadoop-root-balancer-hve-test1.out

Re: Why the official Hadoop Documents are so messy?

2013-01-08 Thread Mohammad Tariq
Hello there, Thank you for the comments. But, just to let you know, it's a community work and no one in particular can be held responsible for these kind of small things. This is how open source works. Guys who are working on Hadoop have a lot of things to do. In spite of that, they are

Re: new to hadoop and first question

2013-01-08 Thread Mohammad Tariq
Make sure all the config settings are OK and you have proper dns resolution. Modify the line 127.0.1.1 in your /etc/hosts file to 127.0.0.1. And, I completely agree with Vinod sir. 0.14 is ancient now. HTH P.S : you can go

Re: Why the official Hadoop Documents are so messy?

2013-01-08 Thread Oleg Zhurakousky
Just a little clarification This is NOT how open source works by any means as there are many Open Source projects with well written and maintained documentation. It all comes down to the 2 Open Source models 1. ASF Open Source - which is a pure democracy or may be even anarchy without any

Re: Why the official Hadoop Documents are so messy?

2013-01-08 Thread Oleg Zhurakousky
No, I was not talking about wrappers of ASF projects. I was referring to non-ASF Open Source projects all together (e.g., GitHub, SourceForge, Google code etc.). Oleg On Jan 8, 2013, at 8:20 AM, Glen Mazza gma...@talend.com wrote: quote: Obviously in the second there is a vested interested

Re: Why the official Hadoop Documents are so messy?

2013-01-08 Thread Hemanth Yamijala
Hi, I am not sure if your complaint is as much about the changing interfaces as it is about documentation. Please note that versions prior to 1.0 did not have stable interfaces as a major requirement. Not by choice, but because the focus was on seemingly more important functionality, stability,

Re: Some mappers are much slower than others in reading data from HDFS

2013-01-08 Thread Andy Isaacson
Your output shows that node2 has 13 mappers and the reducer, while node3 and node4 had only 8 mappers each. So I'd expect some disparity. Since it's hard to correlate the mapper throughput against the reducer throughput, it's possible that node3 got just as much work done. That doesn't explain