Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
Hadoop >> mail # user >> Hadoop 1.0.0 - stuck at map reduce


Copy link to this message
-
Re: Hadoop 1.0.0 - stuck at map reduce
Hi, use the web interface, select job -> one of the working/non-pending
tasks -> task log (all)

it will give you more clues of what might be wrong

-Håvard

On Fri, Mar 16, 2012 at 7:29 PM, blarochelle <[EMAIL PROTECTED]> wrote:

>
> I've installed Hadoop 1.0.0 on Ubuntu. I am running Ubuntu 10.04 in Virtual
> Box.  I am running single node (all on my virtual box).
>
> I can't get the examples to run. Once it hits the map reduce stage it just
> hangs. HDFS seems fine (the jobs create directories/files OK I think). See
> output below (console and web output on port 50030). I can even navigate to
> the job but it doesn't run!
>
> I am new to Hadoop/Mapreduce and just want to get the examples running
> before I start diving in. It took me a while to get the configuration
> working to this point but now I am really stuck.
>
> I assume this is a resource issue (because of running on VirtualBox I don't
> have scads of disk or memory). I also read that there were issues with
> ubuntu with having IPV6turned on but don't want to make changes there
> unless
> I can verify that is the issue.
>
> Sorry if this is a newbie question but I would love to dig into Hadoop and
> my laptop with Virtual box is the most convenient place to do it.
>
> Hope I can get some help here! THanks in advance!
>
> Bob
>
> Console output:
>
> hdfs@bob-laptop:~$ hadoop jar /usr/share/hadoop/hadoop-examples-1.0.1.jar
> pi
> 10 100
> Number of Maps  = 10
> Samples per Map = 100
> Wrote input for Map #0
> Wrote input for Map #1
> Wrote input for Map #2
> Wrote input for Map #3
> Wrote input for Map #4
> Wrote input for Map #5
> Wrote input for Map #6
> Wrote input for Map #7
> Wrote input for Map #8
> Wrote input for Map #9
> Starting Job
> 12/03/16 11:12:12 INFO mapred.FileInputFormat: Total input paths to process
> : 10
> 12/03/16 11:12:19 INFO mapred.JobClient: Running job: job_201203161018_0001
> 12/03/16 11:12:20 INFO mapred.JobClient:  map 0% reduce 0%
>
> Here is what the web interface on port 50030 tells me:
>
> Hadoop Job Queue Scheduling Information on localhost
> State : running
> Scheduling Information : Queue configuration
> Capacity Percentage: 100.0%
> User Limit: 100%
> Priority Supported: NO
> -------------
> Map tasks
> Capacity: 0 slots
> Used capacity: 0 (0.0% of Capacity)
> Running tasks: 0
> -------------
> Reduce tasks
> Capacity: 0 slots
> Used capacity: 0 (0.0% of Capacity)
> Running tasks: 0
> -------------
> Job info
> Number of Waiting Jobs: 0
> Number of Initializing Jobs: 1
> Number of users who have submitted jobs: 1
>
>
> --
> View this message in context:
> http://old.nabble.com/Hadoop-1.0.0---stuck-at-map-reduce-tp33519086p33519086.html
> Sent from the Hadoop core-user mailing list archive at Nabble.com.
>
>
--
Håvard Wahl Kongsgård
NTNU

http://havard.security-review.net/
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB