I use a server with 16 cores, 64 GB ram, 2.5 TB disk and I want to execute
a Giraph program. I have installed hadoop-2.7.2 and I don't know how can
configure hadoop to use only a partial amount of server resources because
the server used by many users. *Requirements:* Hadoop must use max 12 cores
(
Hi Denis,
For the "java.lang.OutOfMemoryError: GC overhead limit exceeded" error I
hope that the conversation in below link can help you.
www.mail-archive.com/user@giraph.apache.org/msg02938.html
Regards,
Xenia
2016-11-08 12:25 GMT+02:00 Denis Dudinski :
> Hi Hassan,
>
> Thank you for really
t; --Panagiotis
>
>
> 2016-11-05 20:28 GMT+02:00 Xenia Demetriou :
> > Hi all,
> >
> > I execute my project from inside eclipse. Maybe this is the problem and
> this
> > value in mapred-site.xml didn't recognised?
> >
> > Basically I have a file w
red.map.child.java.opts
> -Xmx10g
>
>
> Regards,
> Panagiotis
>
> 2016-11-04 23:11 GMT+02:00 Xenia Demetriou :
> > Hi,
> > I have the same problem and I add the following in
> > mapred-site.xml and hadoop-env.sh but I still have the same problem.
> > I try
Hi,
I have the same problem and I add the following in
mapred-site.xml and hadoop-env.sh but I still have the same problem.
I try various values below but nothhing increase the memory.
mapred-site.xml:
mapred.child.java.opts
-Xms256m
-Xmx4096m
hadoop-env.sh:
export HADOOP_HEAPSIZE
Specifically in Superstep 3 if I choose to present the values of the
RealBucket (System.out.println(RealBuckets.bucketList[realMaxPointer_get]);
),
I get the error: Caused by: java.lang.NullPointerException. Why the
RealBucket since in superstep 2 is full up in Superstep 3 is null?
How can I hold
Hi All,
I am MSc student and I try to write an algorithm written in Java using
apache Giraph. But below I have a part of a java code using HashMap in a
way that I can't understan't how can be implemented in Giraph.
I try to implement it to Giraph and for better understanding what actually
the qu
Hi Puneet,
I am not an expert but I had the same error and I solved it by changing the
hostnames of the cluster-Pcs in lowercase e.g Make
iHadoop3 -> ihadoop3
--
Xenia
2014-11-02 14:08 GMT+02:00 Puneet Agarwal :
> I have setup a cluster of 4 computers for running my Pregel jobs.
>
> When runn
Hi Alexander,
Thanks for your help. Also I am not an expert.
In my cluster (4 machines) I define as following:
In master file in all the machines I define two of the machines as Master
and SecondaryNameNode
And in slave file in all the machines, I define the other two machines as
Datanode1 and
Hi experts,
I found the solution for the Zookeeper Exception. I have change the
hostname of the machines to lowercase.
Now any example in Giraph can executed.
Thanks for your help.
2014-08-08 8:34 GMT+03:00 Sardeshmukh, Vivek :
> Hi Xenia,
>
> I think there is some problem with Zookeeper. Can
Also I try to install Zookeeper separately but I still have the same error.
2014-08-08 8:34 GMT+03:00 Sardeshmukh, Vivek :
> Hi Xenia,
>
> I think there is some problem with Zookeeper. Can you make sure that
> Zookeeper server is running. If it is running then is it on port 22181?
> (because you
Hi Vivek,
How can I see in which port Zookeeper running in my cluster?
Giraph start Zookeeper for me.
Thanks
2014-08-08 8:34 GMT+03:00 Sardeshmukh, Vivek :
> Hi Xenia,
>
> I think there is some problem with Zookeeper. Can you make sure that
> Zookeeper server is running. If it is running then
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