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Best regards,
Blanca Hernández
Hi,
with your answer and your questions I cannot answer, I realize that I miss a
lot of Hadoop understanding. I will proceed with analysis and deeper
documentation readings. Do you know some tutorial or similar where I can fully
understand how Hadoop works and how it is performing the MR job?
Hi,
I am using a hadoop map reduce job + mongoDb.
It goes against a data base 252Gb big. During the job the amount of conexions
is over 8000 and we gave already 9Gb RAM. The job is still crashing because of
a OutOfMemory with only a 8% of the mapping done.
Are this numbers normal? Or did we
Thanks for your answer.
To your questions:
1. When you claim 96G ram, I am not sure what do you mean?
It is not 96 Gb RAM, it is 9 Gb that our test server has available (is it too
small?).
2. Your code is not efficient, as using the += on String
I need (or at least I don´t have
. Change it to
Text just like you did for the Mapper.
Regards,
Shahab
On Wed, Sep 17, 2014 at 10:43 AM, Blanca Hernandez
blanca.hernan...@willhaben.atmailto:blanca.hernan...@willhaben.at wrote:
Thanks for answering:
hadoop jar /tmp/hadoop-test.jar at.willhaben.hadoop.AveragePriceCalculationJob
:(
Regards,
Shahab
On Thu, Sep 18, 2014 at 2:58 AM, Blanca Hernandez
blanca.hernan...@willhaben.atmailto:blanca.hernan...@willhaben.at wrote:
Thanks,
I made the changes and everything works fine!! Many thanks!!
Now I am having problems converting BSONWritable to BSONObject and vice versa
Hi!
I am getting some CCE and don´t really understand why...
Here my mapper:
public class AveragePriceMapper extends MapperString, BSONObject, String,
BSONObject{
@Override
public void map(final String key, final BSONObject val, final Context
context) throws IOException,
, but I have the
problems already exposed. How am I testing now? Building a jar, copying it on
the server and running a Hadoop jar command (not very performance approach...).
Could you give me a hand on this? Any Windows + IntelliJ IDEa there? Mny
thanks!
Von: Blanca Hernandez
?
Regards,
Shahab
On Wed, Sep 17, 2014 at 10:28 AM, Blanca Hernandez
blanca.hernan...@willhaben.atmailto:blanca.hernan...@willhaben.at wrote:
Hi again, I changed the String objects with org.apache.hadoop.io.Text objects
(why is String not accepted?), and now I get another exception, so I don´t
Gadalay
skgada...@gmail.commailto:skgada...@gmail.com wrote:
You have to use this command to format
hdfs namenode –format
not hdfs dfs -format
On 8/27/14, Blanca Hernandez
blanca.hernan...@willhaben.atmailto:blanca.hernan...@willhaben.at wrote:
Hi, thanks for your answers.
Sorry, I forgot to add
start: 14/08/26 12:01:09 WARN
namenode.FSNamesystem: Encountered exception loading fsimage
java.io.IOException: NameNode is not formatted.
Have you formatted HDFS (step 3.4)?
On Tue, Aug 26, 2014 at 3:08 AM, Blanca Hernandez
blanca.hernan...@willhaben.atmailto:blanca.hernan...@willhaben.at wrote
Hi!
I have just installed hadoop in my windows x64 machine.l followd carefully the
instructions in https://wiki.apache.org/hadoop/Hadoop2OnWindows but in the
3.5https://wiki.apache.org/hadoop/Hadoop2OnWindows%20but%20in%20the%203.5 and
3.6 points I have some problems I can not handle.
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