I usually do try and error. Start with some very large value and do a binary search :)

--sebastian

On 03/09/2014 01:30 PM, Mahmood Naderan wrote:
Excuse me, I added the -Xmx option and restarted the hadoop services using
sbin/stop-all.sh && sbin/start-all.sh

however still I get heap size error. How can I find the correct and needed heap 
size?


Regards,
Mahmood



On Sunday, March 9, 2014 1:37 PM, Mahmood Naderan <[email protected]> wrote:

OK  I found that I have to add this property to mapred-site.xml


<property>
<name>mapred.child.java.opts</name>
<value>-Xmx2048m</value>
</property>



Regards,
Mahmood




On Sunday, March 9, 2014 11:39 AM, Mahmood Naderan <[email protected]> wrote:

Hello,
I ran this command

     ./bin/mahout wikipediaXMLSplitter -d 
examples/temp/enwiki-latest-pages-articles.xml -o wikipedia/chunks -c 64

but got this error
      Exception in thread "main" java.lang.OutOfMemoryError: Java heap space

There are many web pages regarding this and the solution is to add "-Xmx 2048M" for 
example. My question is, that option should be passed to java command and not Mahout. As  result, 
running "./bin/mahout -Xmx 2048M" shows that there is no such option. What should I do?


Regards,
Mahmood


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