On May 5, 2008, at 2:03 PM, Ahmad Humayun wrote:
Thanks Christophe :) Hadoop is running fine now :)
does anyone know how to reduce this heap requirement....is such a
large heap
size being imposed by Hadoop itself? Do I need to set the jvm by
using -Xms
settings....anyone knows how to do that?
By default the hadoop daemons (JT/TT & NN/DN) use a heap-size of 1G.
You can tweak them with HADOOP_HEAPSIZE in your conf/hadoop-env.sh.
(Note: you can also set them per daemon using HADOOP_<daemon>_OPTS,
see conf/hadoop-env.sh for details)
Arun
Thanks again to everyone helping out on the mailing list ....all of
you are
doing a great job :)
Regards,
On Tue, May 6, 2008 at 1:01 AM, Ahmad Humayun
<[EMAIL PROTECTED]> wrote:
Just tried with 512 MB and 1 GB....and guess what .... it started
(finally!!) working at a GB.
Is there a way to lower this requirement?.....I'll also just try
to hone
in into the min. amount of RAM needed.
I really can't afford using a GB of RAM for my VM....I will soon
run out
of juice that way :(
Regards,
On Tue, May 6, 2008 at 12:49 AM, Ahmad Humayun
<[EMAIL PROTECTED]>
wrote:
Well my VM is allocated 256 MB.....I'll just increase it and
report back
Plus I have just tried HelloWorld programs....and since they
hardly have
any memory usage, they work.
Regards,
On Tue, May 6, 2008 at 12:41 AM, Christophe Taton <[EMAIL PROTECTED]>
wrote:
Hi Ahmad,
As the error message suggests it, your issue is likely to be
related
to the
amount of memory available:
Error occurred during initialization of VM
Could not reserve enough space for object heap
How much memory did you allocate to your VM? Can you run any other
Java
applications in your JVM?
Christophe
On Mon, May 5, 2008 at 9:33 PM, Ahmad Humayun
<[EMAIL PROTECTED]>
wrote:
Hi there,
Has anybody tried running Hadoop on VMware (6.0). I have installed
open
SUSE
10.2 as a guest OS....and I have been trying to get Hadoop
started,
but
whatever I do with bin/hadoop, I keep getting this error:
*Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.*
Any ideas? Is it a problem with VMware? Or maybe my java
environment
setup?
Or I'm simply doing something wrong in setting up Hadoop?
Thanks again!
Regards,
--
Ahmad Humayun
Research Assistant
Computer Science Dpt., LUMS
+92 321 4457315
--
Ahmad Humayun
Research Assistant
Computer Science Dpt., LUMS
+92 321 4457315
--
Ahmad Humayun
Research Assistant
Computer Science Dpt., LUMS
+92 321 4457315
--
Ahmad Humayun
Research Assistant
Computer Science Dpt., LUMS
+92 321 4457315
