Try using virtual box/vmware and downloading either an image that has hadoop on
it or a linux image and installing it there.
Good luck
James.
On 2011-07-26, at 12:33 PM, A Df wrote:
Dear All:
I am trying to run Hadoop on Windows 7 so as to test programs before moving
to Unix/Linux. I
Single reducer.
On 2011-07-05, at 9:09 AM, Mark wrote:
Is there anyway I can write out the results of my mapreduce job into 1 local
file... ie the opposite of getmerge?
Thanks
If you are very adhoc-y, more bandwidth the merry-er!
James
Sent from my mobile. Please excuse the typos.
On 2011-06-28, at 5:03 PM, Matei Zaharia ma...@eecs.berkeley.edu wrote:
Ideally, to evaluate whether you want to go for 10GbE NICs, you would profile
your target Hadoop workload and
Not sure that will help ;)
Sent from my mobile. Please excuse the typos.
On 2011-05-30, at 9:23 AM, Boris Aleksandrovsky balek...@gmail.com wrote:
have more data for it to process :)
On 2011-05-26, at 4:30 PM, Mohit Anchlia wrote:
I ran a simple pig script on this file:
-rw-r--r-- 1 root root 208348 May 26 13:43 excite-small.log
that orders the contents by name. But it only created one mapper. How
can I change this to distribute
mohitanch...@gmail.com wrote:
I think I understand that by last 2 replies :) But my question is can
I change this configuration to say split file into 250K so that
multiple mappers can be invoked?
On Thu, May 26, 2011 at 3:41 PM, James Seigel ja...@tynt.com wrote:
have more data for it to process
The job could be designed to use one reducer
On 2011-05-20, at 7:19 AM, praveenesh kumar praveen...@gmail.com wrote:
Hello everyone,
I am using wordcount application to test on my hadoop cluster of 5 nodes.
The file size is around 5 GB.
Its taking around 2 min - 40 sec for execution.
But
The cheapest way would be to check the counters as you write them in
the first place and keep a running score. :)
Sent from my mobile. Please excuse the typos.
On 2011-05-20, at 10:35 AM, W.P. McNeill bill...@gmail.com wrote:
I've got a directory with a bunch of MapReduce data in it. I want
W.P.,
Hard to help out without knowing more about the characteristics of your data?
How many keys are you expecting? How many values per key?
Cheers
James.
On 2011-05-18, at 3:25 PM, W.P. McNeill wrote:
I'm working on a cluster with 360 reducer slots. I've got a big job, so
when I launch
W.P,
Sounds like you are going to be taking a long time no matter what. With a
keyspace of about 10^7 that means that either hadoop is going to eventually
allocate 10^7 reducers (if you set you reducer count to 10^7) or is going to
re-use the ones you have 10^6 / (number of reducers you
W.P,
Upping the reduce.tasks to a huge number just means that it will eventually
spawn reducers = to (that huge number). You still only have slots for 360 so
there is no real advantage, UNLESS you are running into OOM errors, which we’ve
seen with higher re-use on the smaller number of
:37 hadoop-juneng.2
To Harsh.
yes, out cluster has 96 occupied reducer slots.
and my job is using 90 reduce tasks at one time to complete it.
thanks for all.
Junyoung Kim (juneng...@gmail.com)
On 05/02/2011 08:32 PM, James Seigel wrote:
What are your permissions on your
Also an input split size thing in there as well. But definitely # of
mappers are proportional to input data size
Sent from my mobile. Please excuse the typos.
On 2011-05-01, at 11:26 AM, ShengChang Gu gushengch...@gmail.com wrote:
If I'm not mistaken,then the map slots = input data size /
I know cloudera has a bug in their version. They should have filed a
Jira for it.
Are you getting NPE in the logs?
James
Sent from my mobile. Please excuse the typos.
On 2011-04-26, at 6:53 AM, Saurabh bhutyani s4saur...@gmail.com wrote:
Which version of hadoop are you referring to?
Thanks
Quicker:
Shut off power
Throw hard drive out put new one in
Turn power back on.
Sent from my mobile. Please excuse the typos.
On 2011-04-25, at 5:38 PM, Mayuran Yogarajah
mayuran.yogara...@casalemedia.com wrote:
Hello,
One of our nodes has a bad hard disk which needs to be replaced. I'm
become inaccessible between boots if
you simultaneously lose another node. Probably not an issue at 3 replicas,
but definitely an issue at 2.
Brian
On Apr 25, 2011, at 7:58 PM, James Seigel wrote:
Quicker:
Shut off power
Throw hard drive out put new one in
Turn power back on.
Sent
Check where the hadoop tmp setting is pointing to.
James
Sent from my mobile. Please excuse the typos.
On 2011-04-24, at 12:41 AM, Peng, Wei wei.p...@xerox.com wrote:
Hi,
I need a help very bad.
I got an HDFS permission error by starting to run hadoop job
Same versions of hadoop in each cluster?
Sent from my mobile. Please excuse the typos.
On 2011-04-18, at 6:31 PM, sonia gehlot sonia.geh...@gmail.com wrote:
Hi All,
I am trying to copy files from one hadoop cluster to another hadoop cluster
but I am getting following error:
Yup. I'm boring
On 2011-04-17, at 6:07 PM, Ted Dunning tdunn...@maprtech.com wrote:
Turing completion isn't the central question here, really. The truth
is, map-reduce programs have considerably pressure to be written in a
scalable fashion which limits them to fairly simple behaviors that
If all the seigel/seigal/segel gang don't chime in It'd be weird.
What size of data are we talking?
James
On 2011-04-14, at 11:06 AM, Michael Segel michael_se...@hotmail.com wrote:
James,
If I understand you get a set of immutable attributes, then a state which can
change.
If
James’ quick and dirty, get your job running guideline:
-libjars -- for jars you want accessible by the mappers and reducers
classpath or bundled in the main jar -- for jars you want accessible to the
runner
Cheers
James.
On 2011-04-04, at 12:31 PM, Shuja Rehman wrote:
well...i think to
. It might be harder to
grab coffee, but it would be fun to see where everyone is.
Shout out if you’d like or ping me, I think it’d be fun to chat!
Cheers
James Seigel
Captain Hammer at Tynt.com
that I think about it, there's probably enough Canucks around here
that use Hadoop that we could have our own little user group. If you
want to have a nice vacation and geek out with us, feel free to stop
by and say hi.
/rant
J-D
On Tue, Mar 29, 2011 at 6:21 AM, James Seigel ja
If you are using one of the supported platforms, then it is easy to get up and
going fairly quickly as well.
...advice from another seigel/segel
Cheers
james.
On 2011-03-23, at 9:32 AM, Michael Segel wrote:
Rita,
It sounds like you're only using Hadoop and have no intentions to really
Ther is a step which flips a bit. finalizeupgrade or something that
needs to be run.
Should be straight forward
Cheers
James
Sent from my mobile. Please excuse the typos.
On 2011-03-22, at 7:32 AM, Gokulakannan M gok...@huawei.com wrote:
Hi all,
A newbie question reg backupnode . I just
Hello, some quick advice for you
which portion of your job needs the jar? if answer = mapper or reducer, then
add it to the -libjars flag.
If it is in the job initiation..bundle it in your job jar for fun.
Cheers
James.
On 2011-03-22, at 7:35 PM, Jeff Zhang wrote:
Another work around I
sequence file.
On Wed, Mar 23, 2011 at 9:41 AM, James Seigel ja...@tynt.com wrote:
Hello, some quick advice for you
which portion of your job needs the jar? if answer = mapper or reducer,
then add it to the -libjars flag.
If it is in the job initiation..bundle it in your job
Just a note. If you just shut the node off, the blocks will replicate faster.
James.
On 2011-03-18, at 10:03 AM, Ted Dunning wrote:
If nobody else more qualified is willing to jump in, I can at least provide
some pointers.
What you describe is a bit surprising. I have zero experience
I agree.
J
On 2011-03-18, at 11:34 AM, Ted Dunning wrote:
I like to keep that rather high. If I am decommissioning nodes, I generally
want them out of the cluster NOW.
That is probably a personality defect on my part.
On Fri, Mar 18, 2011 at 9:59 AM, Michael Segel
Hello again.
I am guessing with the lack of response that there are either no hadoop people
from Calgary, or they are afraid to meetup :)
How about just speaking up if you use hadoop in Calgary :)
Cheers
James.
\
On 2011-03-07, at 8:40 PM, James Seigel wrote:
Hello,
Just wondering
I believe sir there should be a flume support group on cloudera. I'm
guessing most of us here haven't used it and therefore aren't much
help.
This is vanilla hadoop land. :)
Cheers and good luck!
James
On a side note, how much data are you pumping through it?
Sent from my mobile. Please
Yes. Just your FAT is consumed.
Sent from my mobile. Please excuse the typos.
On 2011-03-12, at 11:04 AM, Florin Picioroaga florinp...@yahoo.com wrote:
Hello!
I've been reading in the Hadoop Definitive guide by Tom White
about the block emptiness when a file is not large enough to occupy
Do you have the amazon tools installed and in the appropriate path?
James
Sent from my mobile. Please excuse the typos.
On 2011-03-12, at 11:04 AM, JJ siung latenight...@gmail.com wrote:
Hi,
I am following a setup guide here: http://wiki.apache.org/hadoop/AmazonEC2 but
runs into problems
How many nodes?
Sent from my mobile. Please excuse the typos.
On 2011-03-10, at 7:05 AM, Lai Will l...@student.ethz.ch wrote:
Hello,
Currently I've been playing around with my single node cluster.
I'm planning to test my code on a real cluster in the next few weeks.
I've read some
Sorry, and where are you hosting the cluster? Cloud? Physical? Garage?
Sent from my mobile. Please excuse the typos.
On 2011-03-10, at 7:05 AM, Lai Will l...@student.ethz.ch wrote:
Hello,
Currently I've been playing around with my single node cluster.
I'm planning to test my code on a
Simplest case, if you need a sum of the lines for A,B, and C is to
look at the output that is normally generated which tells you Reduce
output records. This can be accessed like the others are telling
you, as a counter, which you could access and explicitly print out or
with your eyes as the
Hello,
Just wondering if there are any YYC hadoop users in the crowd and if
there is any interest in a meetup of any sort?
Cheers
James Seigel
Captain Hammer
Tynt
Mahout project?
Sent from my mobile. Please excuse the typos.
On 2011-03-04, at 6:41 AM, MANISH SINGLA coolmanishh...@gmail.com wrote:
Hey ppl...
I need some serious help...I m not able to run kmeans code in
hadoop...does anyone have a running code...that they would have
tried...
Regards
the typos.
On 2011-03-04, at 7:37 AM, MANISH SINGLA coolmanishh...@gmail.com wrote:
are u suggesting me that??? if yes can u plzzz tell me the steps to
use that...because I havent used it yet...a quick reply will really be
appreciated...
Thanx
Manish
On Fri, Mar 4, 2011 at 7:39 PM, James
doesn't release it until may. Thanks!
Mike Nute
--Original Message--
From: James Seigel
To: common-user@hadoop.apache.org
ReplyTo: common-user@hadoop.apache.org
Subject: Re: k-means
Sent: Mar 4, 2011 9:46 AM
I am not near a computer so I won't be able to give you specifics. So
instead
on shared storage, that might be the issue? Btw, how do I
start
the services independently on each node?
-bikash
On Sun, Feb 27, 2011 at 11:05 PM, James Seigel ja...@tynt.com wrote:
Did you get it working? What was the fix?
Sent from my mobile. Please excuse the typos.
On 2011-02-27, at 8
slightly not on point for this conversation, but I thought it worth
mentioningLZO is splitable, which makes it a good for for hadoopy things.
Just something to remember when you do get some final results on performance.
Cheers
James.
On 2011-03-02, at 8:12 PM, Brian Bockelman wrote:
Sorting out of the map phase is core to how hadoop works. Are you asking why
sort at all? or why did someone use quick sort as opposed to _sort?
Cheers
James
On 2011-02-28, at 3:30 AM, elton sky wrote:
Hello forumers,
Before spill the data in kvbuffer to local disk in map task, k/v
, the
same problem persists, so was bit confused.
Also, checked the TaskTracker logs on those nodes, there does not seem to
be
any error.
-bikash
On Sat, Feb 26, 2011 at 10:30 AM, James Seigel ja...@tynt.com wrote:
Maybe your ssh keys aren’t distributed the same on each machine or the
machines
Maybe your ssh keys aren’t distributed the same on each machine or the machines
aren’t configured the same?
J
On 2011-02-26, at 8:25 AM, bikash sharma wrote:
Hi,
I have a 10 nodes Hadoop cluster, where I am running some benchmarks for
experiments.
Surprisingly, when I initialize the
The ones that are present.
It is a little tricky for the other ones however, well not really once you “get
it”
-libjars list of supporting jars on the commandline will ship the
“supporting” jars out with the job to the map reducers, however if you, for
some reason need them in the job
Hello,
It is hard to give advice without the specific code. However, if you don’t
have your job submission set up to wait for completion then it might be
launching all your jobs at the same time.
Check to see how your jobs are being submitted.
Sorry, I can’t be more helpful.
James
On
You probably should ask on the cloudera support forums as cloudera has
for some reason changed the users that things run under.
James
Sent from my mobile. Please excuse the typos.
On 2011-02-24, at 8:00 AM, JAGANADH G jagana...@gmail.com wrote:
Hi All
I was trying to install CDH3 Hhase in
Run a standard job before. Look at the summary data.
Run the job again after the changes and look at the summary.
You should see less file system bytes written from the map stage.
Sorry, might be most obvious in shuffle bytes.
I don't have a terminal in front of me right now.
James
Sent from
Well the first thing I'd ask to see (if we can) is the code or a
description of what your reducer is doing.
If it is holding on to objects too long or accumulating lists well
then with the right amount of data you will run OOM.
Another thought is that you've just not allocated enough mem for the
...oh sorry I didn't scroll below the exception the first time. Try part 2
James
Sent from my mobile. Please excuse the typos.
On 2011-02-16, at 8:00 AM, Kelly Burkhart kelly.burkh...@gmail.com wrote:
Hello, I'm seeing frequent fails in reduce jobs with errors similar to this:
2011-02-15
the same md5sum.
On Wed, Feb 16, 2011 at 10:15 AM, James Seigel ja...@tynt.com wrote:
He might not have that conf distributed out to each machine
Sent from my mobile. Please excuse the typos.
On 2011-02-16, at 9:10 AM, Kelly Burkhart kelly.burkh...@gmail.com wrote:
Our clust admin (who's out
the cluster.
I'm running again; we'll see if it completes this time.
-K
On Wed, Feb 16, 2011 at 10:30 AM, James Seigel ja...@tynt.com wrote:
Hrmmm. Well as you've pointed out. 200m is quite small and is probably
the cause.
Now thEre might be some overriding settings in something you are using
The only thing of concern is that the hdfs stuff doesn't seem to do
exceptionally well with different sized disks in practice
James
Sent from my mobile. Please excuse the typos.
On 2011-02-12, at 8:43 AM, Edward Capriolo edlinuxg...@gmail.com wrote:
On Fri, Feb 11, 2011 at 7:14 PM, Ted
Share code from your mapper?
Check to see if there are any errors on the job tracker reports that might
indicate the inability to find the class.
James.
On 2011-02-02, at 2:23 PM, Christian Kunz wrote:
Without seeing the source code of the reduce method of the InvIndexReduce
class
my
It means that the scheduler is killing off some of your reducer jobs or some of
them are dieing. Maybe they are taking too long. You should check out your
job tracker and look at some of the details and then drill down to see if you
are getting any errors in some of your reducers.
Cheers
Has anyone tried to do the reuters example with both approaches? I seem to
have problems getting them to run.
Cheers
James.
On 2011-01-29, at 9:25 AM, Ted Yu wrote:
$MAHOUT_HOME/examples/bin/build-reuters.shFYI
On Sat, Jan 29, 2011 at 12:57 AM, Marco Didonna m.didonn...@gmail.comwrote:
Not sure if this would work, or the right approach, but looking into hadoop
streaming, ?might? find something?
Cheers
James.
On 2011-01-06, at 3:27 PM, W.P. McNeill wrote:
Say I have two MapReduce processes, A and B. The two are algorithmically
dissimilar, so they have to be implemented as
As the other gentleman said. The reduce task kinda needs to know all
the data is available before doing its work.
By design.
Cheers
James
Sent from my mobile. Please excuse the typos.
On 2011-01-04, at 6:14 PM, sagar naik sn...@attributor.com wrote:
Hi Jeff,
To be clear on my end I m not
Or
3) The configuration (or lack thereof) on the machine you are trying to
run this, has no idea where your DFS or JobTracker is :)
Cheers
James.
On 2010-12-30, at 8:53 PM, Adarsh Sharma wrote:
Cavus,M.,Fa. Post Direkt wrote:
I process this
./hadoop jar ../../hadoopjar/hd.jar
jar -tvf the jar file and double check that it is a class that is
listed. Can't be in an included jar file.
Sent from my mobile. Please excuse the typos.
On 2010-12-28, at 7:58 AM, Cavus,M.,Fa. Post Direkt
m.ca...@postdirekt.de wrote:
Hi,
I process this command: ./hadoop jar
For job tracker go to port 50030 see if that helps
James
Sent from my mobile. Please excuse the typos.
On 2010-12-28, at 1:36 PM, maha m...@umail.ucsb.edu wrote:
James said:
Is the job tracker running on that machine?YES
Is there a firewall in the way? I don't think so, because it
PM, James Seigel wrote:
For job tracker go to port 50030 see if that helps
James
Sent from my mobile. Please excuse the typos.
On 2010-12-28, at 1:36 PM, maha m...@umail.ucsb.edu wrote:
James said:
Is the job tracker running on that machine?YES
Is there a firewall in the way? I
Not sure what you mean.
Can you write custom code for your map functions?: yes
Cheers
James
Sent from my mobile. Please excuse the typos.
On 2010-12-28, at 3:54 PM, Jander g jande...@gmail.com wrote:
Hi, all
Whether Hadoop supports the map function running different code? If yes, how
to
Thank you for sharing.
Sent from my mobile. Please excuse the typos.
On 2010-12-27, at 11:18 AM, Sudhir Vallamkondu
sudhir.vallamko...@icrossing.com wrote:
We recently crossed this bridge and here are some insights. We did an
extensive study comparing costs and benchmarking local vs EMR for
Two quick questions first.
Is the job tracker running on that machine?
Is there a firewall in the way?
James
Sent from my mobile. Please excuse the typos.
On 2010-12-27, at 4:46 PM, maha m...@umail.ucsb.edu wrote:
Hi,
I get Error 404 when I try to use hadoop UI to monitor my job
I may be wrong but it seems that you are approaching this problem like
you would in the normal programming world and rightly so.
Depending on the set of the data ( triangle square or other ), you
could do some simple things like spit out the right side of your pair
as the key and the left side as
If you're wondering where to get a counter from, I'll point you to context
Sent from my mobile. Please excuse the typos.
On 2010-12-17, at 7:39 AM, Ted Yu yuzhih...@gmail.com wrote:
You can use hadoop counter to pass this information.
This way, you see the counters in job report.
On Thu,
Exactly. It is hard to assume anything about order or coordination between
maps or reducers. You should try and design with “sloppy” coordination
strategies.
James.
On 2010-12-17, at 10:32 AM, Ted Dunning wrote:
Statics won't work the way you might think because different mappers and
But it would give you the right creds for people that you’d want to work for :)
James
On 2010-12-15, at 10:26 AM, Konstantin Boudnik wrote:
Hey, commit rights won't give you a nice looking certificate, would it? ;)
On Wed, Dec 15, 2010 at 09:12, Steve Loughran ste...@apache.org wrote:
On
They represent the amount data written to the physical disk on the slaves, as
intermediate files before or during the shuffle phase. Where HDFS bytes are
the files written back into hdfs containing the data you wish to see.
J
On 2010-12-15, at 10:37 AM, abhishek sharma wrote:
Hi,
What do
Option 1 = good
Sent from my mobile. Please excuse the typos.
On 2010-11-03, at 8:27 PM, shangan shan...@corp.kaixin001.com wrote:
I don't think the first two options can work, even you stop the tasktracker
these to-be-retired nodes are still connected to the namenode.
Option 3 can work.
Seems a little light ;)
J
On 2010-10-29, at 3:45 PM, Pablo Cingolani wrote:
Seriously? 10 of experience in Hive, Hadoop and MongoDb? :-)
On Fri, Oct 29, 2010 at 5:38 PM, Ram Prakash
ram.prak...@e-solutionsinc.com wrote:
Job Title: Sr. Developer - Hadoop Hive
Location: Cupertino, CA
If there is a hard requirement for input split being one block you could just
make your input split fit a smaller block size.
Just saying, in case you can't overcome the 2G ceiling
J
Sent from my mobile. Please excuse the typos.
On 2010-10-18, at 5:08 PM, elton sky eltonsky9...@gmail.com
Welcome to the land of the fuzzy elephant!
Of course there are many ways to do it. Here is one, it might not be brilliant
or the right was, but I am sure you will get more :)
Use the identity mapper...
job.setMapperClass(Mapper.class);
then have one reducer
Is the footer on this email a little rough for content that will be passed
around and made indexable on the internets?
Just saying :)
Cheers
James
Sent from my mobile. Please excuse the typos.
On 2010-09-10, at 8:01 PM, Kaluskar, Sanjay skalus...@informatica.com wrote:
Have you considered
Are the libs exploded inside the main jar? If not then no it probably won't
work.
James
Sent from my mobile. Please excuse the typos.
On 2010-09-10, at 7:43 PM, Mark static.void@gmail.com wrote:
If I deploy 1 jar (that contains a lib directory with all the required
dependencies)
There is a call to seethe sort order as well, by changing the comparator.
James
Sent from my mobile. Please excuse the typos.
On 2010-09-06, at 12:06 AM, Owen O'Malley omal...@apache.org wrote:
The critical item is that your map's output key should be IntWritable
instead of Text. The
added to the examples.
On Thu, Jul 22, 2010 at 4:59 AM, James Seigel ja...@tynt.com wrote:
Oh yeah, it would help if I put the url:
http://github.com/seigel/MRPatterns
James
On 2010-07-21, at 2:55 PM, James Seigel wrote:
Here is a skeleton project I stuffed up on github (feel free
The output of the reducer is Text/IntWritable.
To set the input to the reducer you set the mapper output classes.
Cheers
James
Sent from my mobile. Please excuse the typos.
On 2010-08-25, at 8:13 PM, Mark static.void@gmail.com wrote:
job.setOutputKeyClass(Text.class);
Not sure exactly your goals, but look into SOCKS proxy stuff as well. You can
have the hadoop command binary running locally and talking over a socks proxy
to the actual cluster, without having to have the machines exposed all over the
place.
Cheers
James.
On 2010-07-28, at 10:42 AM,
Jeff, I agree that cascading looks cool and might/should have a place in
everyone’s tool box, however at some corps it takes a while to get those kinds
of changes in place and therefore they might have to hand craft some java code
before moving (if they ever can) to a different technology.
I
Hello!
Here is what I have been thinking over the last while. There are probably a
number of us that have prototyped stuff in pig or hive and now think that we
should convert it to some java map reduce code.
Would anyone be interested in building a “patterns” area somewhere possibly
with
Cool. Maybe we should start a page.
J
On 2010-06-24, at 8:16 PM, Harsh J wrote:
On Fri, Jun 25, 2010 at 2:42 AM, Raymond Jennings III
raymondj...@yahoo.com wrote:
Oh, maybe that's what I meant :-) I recall reading something on this mail
group that the compression in not included with the
...this is a no brainer.
Stick with it...it is complicated ( a bit ) to install
Cheers
J
On 2010-06-24, at 8:45 PM, James Seigel wrote:
Cool. Maybe we should start a page.
J
On 2010-06-24, at 8:16 PM, Harsh J wrote:
On Fri, Jun 25, 2010 at 2:42 AM, Raymond Jennings III
raymondj...@yahoo.com wrote
Great segway! Is there a definitive guide to indexing with lucene and hadoop
and serving up the results some how distributed like!
Thanks gang
James
Sent from my mobile. Please excuse the typos.
On 2010-06-18, at 3:44 AM, Steve Loughran ste...@apache.org wrote:
Otis Gospodnetic wrote:
Up the memory from the default to about 4x the default (heap setting). This
should make it better I’d think!
We’d been having the same issue...I believe this fixed it.
James
On 2010-06-17, at 3:00 PM, Li, Tan wrote:
Folks,
I need some help on job tracker.
I am running a two hadoop
Oleg,
Are you wanting to have them in different reducers? If so then you can write a
Comparable object to make that happen.
If you want them to be on the same reducer, then that is what hadoop will do.
:)
On 2010-06-09, at 3:06 PM, Ted Yu wrote:
Can you disclose more about how K3 is
Maybe copy your hdfs config here and we can see why it took up 16 gigs
of space.
Cheers
Sent from my mobile. Please excuse the typos.
On 2010-04-10, at 3:22 PM, Michael Segel michael_se...@hotmail.com
wrote:
Mike,
First, you need to see what you set your block size to in Hadoop. By
I am new to this group, and relatively new to hadoop.
I am looking at building a large cluster. I was wondering if anyone has any
best practices for a cluster in the hundreds of nodes? As well, has anyone had
experience with a cluster spanning multiple data centers. Is this a bad
practice?
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