Re: Patch for v1.1.2 (if this tree is under development)

2013-05-15 Thread Chris Nauroth
Hello Karl, Thank you for investigating the issue and preparing a patch! Yes, the 1.x line is still maintained. (We just released 1.2.0.) All patches do require a corresponding issue in JIRA, so I recommend logging in to https://issues.apache.org/jira/ and submitting this information in a new i

[jira] [Created] (MAPREDUCE-5253) Whitespace value entry in mapred-site.xml for name=mapred.reduce.child.java.opts causes child tasks to fail at launch

2013-05-15 Thread Karl D. Gierach (JIRA)
Karl D. Gierach created MAPREDUCE-5253: -- Summary: Whitespace value entry in mapred-site.xml for name=mapred.reduce.child.java.opts causes child tasks to fail at launch Key: MAPREDUCE-5253 URL: https://issues.

Patch for v1.1.2 (if this tree is under development)

2013-05-15 Thread Karl Gierach
Hi, Below is a patch for Hadoop v1.1.2.  I'm new to this list, so if I need to write up a JIRA ticket for this, please let me know. The defect scenario is that if you enter any white space within values in this file:     /etc/hadoop/mapred-site.xml e.g.: (a white space prior to the -X...)

[jira] [Created] (MAPREDUCE-5252) Fair scheduler should use SchedulerUtils.normalizeRequest

2013-05-15 Thread Sandy Ryza (JIRA)
Sandy Ryza created MAPREDUCE-5252: - Summary: Fair scheduler should use SchedulerUtils.normalizeRequest Key: MAPREDUCE-5252 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5252 Project: Hadoop Map/

RE: which mapreduce project to work on?

2013-05-15 Thread Elma Barjami
Hi Harsh, i thank you for your fast reply. Yes i want to implement something similiar to the paper you sent me. But i have still some problems with the structure of the projects in svn. You wrote that i should work on MR2. That means YARN doesn't it? After going to http://svn.apache.o

[jira] [Created] (MAPREDUCE-5251) Reducer should not implicate map attempt if it has insufficient space to fetch map output

2013-05-15 Thread Jason Lowe (JIRA)
Jason Lowe created MAPREDUCE-5251: - Summary: Reducer should not implicate map attempt if it has insufficient space to fetch map output Key: MAPREDUCE-5251 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5251

recent enhancements on map reduce project

2013-05-15 Thread Samaneh Shokuhi
Hello All, I want to know about the enhancements and optimizations done recently on hadoop (map-reduce project) . Is there any documentation or paper to explain aim of those modifications ? Best, Samaneh

Re: which mapreduce project to work on?

2013-05-15 Thread Harsh J
Are you looking to do something similar to http://www.neilconway.org/docs/nsdi2010_hop.pdf? Ideally you should be working on MR2 which replaces MR1, and MR2 is available in the current 2.0.x releases as well as in trunk. If not a specific revision of trunk, you can pick the 2.x release (or branch-

which mapreduce project to work on?

2013-05-15 Thread Elma Barjami
Hi together, I'm new in Hadoop and I need some help. What I'm trying to do is to modify the MapReduce framework , that some reduce work begin before all maps ends their job. The very first question is which project from svn is more adequate to work on/develop? Second, is there a possibility t

[jira] [Created] (MAPREDUCE-5250) Searching for ';' in JobTracker History throws ArrayOutOfBoundException

2013-05-15 Thread Karthik Kambatla (JIRA)
Karthik Kambatla created MAPREDUCE-5250: --- Summary: Searching for ';' in JobTracker History throws ArrayOutOfBoundException Key: MAPREDUCE-5250 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5250