hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Serge Blazhievsky <Serge.Blazhiyevs...@nice.com>
Subject Re: 1gb allocated per thread for input read
Date Fri, 13 Apr 2012 21:48:08 GMT

Take a look at 

You can pass parameters via mapred.child.java.opts to task process and
each task will obey

Serge Blazhievsky

On 4/13/12 2:41 PM, "Barry, Sean F" <sean.f.barry@intel.com> wrote:

>Isnt essentially task = thread within my java app? Or maybe I am mistaken.
>My main concern is that I need an upper bound to limit the memory
>footprint for each java thread. Are there any configurations in Hadoop
>that can help me do so?
>-----Original Message-----
>From: Serge Blazhievsky [mailto:Serge.Blazhiyevskyy@nice.com]
>Sent: Friday, April 13, 2012 2:20 PM
>To: common-user@hadoop.apache.org
>Subject: Re: 1gb allocated per thread for input read
>Per thread or per task?
>On 4/13/12 2:17 PM, "Barry, Sean F" <sean.f.barry@intel.com> wrote:
>>*FYI this is a proof of concept cluster*
>>In my two node cluster that consists of Master - Jobtracker, Datanode,
>>Namenode, tasktracker, Secondarynamenode And Slave - Datenode ,
>>I have no more than 8g of ram on my slave and even less on the master
>>and I am currently running 4 tasks on the slave and 2 on the master. My
>>issue is that: is there a way where I can make sure that no more than
>>1g per thread  is allocated to read a large input file for my job?

View raw message