The key/value pairs are processes by the mapper independently of each
other. The combiner logic deals with all the outputs from multiple
key/value pairs do that logic can not be in the map method.
On Jul 4, 2014 1:29 AM, Chhaya Vishwakarma
chhaya.vishwaka...@lntinfotech.com wrote:
Hi,
If
Some comments:
3 drives each of capacity 1Tb will be better than one 3 Tb drive.
On a small cluster you can not afford to reserve a whole machine for each
master daemon. The NameNode and JobTracker will have to cohabit with
DataNodes and TaskTrackers.
As for pricing if it is for an institution
On Fri, Jul 4, 2014 at 10:59 AM, Chhaya Vishwakarma
chhaya.vishwaka...@lntinfotech.com wrote:
Hi,
If have two map tasks running on one node , i have written combiner class
also.
Will combiner be called once for each map task or just once for both the
map tasks
Can i write a logic
Hi All,
I am running Hadoop 2.4.0. I am trying to restart my HA cluster but since
there isn't a way to gracefully shutdown the NN (AFAIK), I am running into
a (sort of) race condition. A client has issued a delete command and NN
successfully deletes the requested file (in-progress edit logs
hey Rahul,
thanks for pointing me to that page. It's definately worth a read. Need
both clusters to be at least V2.3 for that?
I was digging also a little bit further. There is the property setting
fs.defaultFS whchi might be the exact setting I was actually looking for.
Unfortuantely MapR
Hello Experts,
Wanted to explore the available tools in the market on streaming data. I know
Apache Spark exists. Are there any other tools available?
Regards,
Santosh Karthikeyan
This message is for the designated recipient only and may contain privileged,
Hi,
Over the past two weeks, from a standing start, I¹ve worked on a Hadoop
based parallel genetic sequence alignment algorithm as part of my
university masters project.
Thankfully that¹s now up and running, along the way I got some great help
from members of this group and I deeply appreciate
Storm. It’s not a part of the Apache project but it seems to be what people are
using to process event data.
B.
From: santosh.viswanat...@accenture.com
Sent: Friday, July 04, 2014 11:25 AM
To: user@hadoop.apache.org
Subject: Streaming data - Avaiable tools
Hello Experts,
Wanted to
Storm is another project sponsored by ASF. Look here:
http://storm.apache.org
On 04/07/14 12:28, Adaryl Bob Wakefield, MBA wrote:
Storm. It’s not a part of the Apache project but it seems to be what
people are using to process event data.
B.
*From:* santosh.viswanat...@accenture.com
My information is out of date. It looks like it’s a full on incubator project
now. Here is a working link:
https://storm.incubator.apache.org/
B.
From: Marcos Ortiz
Sent: Friday, July 04, 2014 11:31 AM
To: user@hadoop.apache.org
Subject: Re: Streaming data - Avaiable tools
Storm is another
Try Storm+ Esper
http://tomdzk.wordpress.com/2011/09/28/storm-esper/
On Fri, Jul 4, 2014 at 12:38 PM, Adaryl Bob Wakefield, MBA
adaryl.wakefi...@hotmail.com wrote:
My information is out of date. It looks like it's a full on incubator
project now. Here is a working link:
I want to run a PageRank job in Hadoop. I know that there is a Pegasus
implementation of PageRank. How do I submit the job to Hadoop for running
PageRank algorithm? I also want to know if I have to supply the code.
Thank You
--
*Whether you think you can or you cannot.either way you are
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