chandravadana wrote:
hi
Thanks all.. ur guidelines helped me a lot..
i'm using Jfreechart... when i set System.setProperty("java.awt.headless",
"true"); i'm able to run this properly...
this is good; consider writing this up on the hadoop wiki
if i specify the path (where the chart is to be saved) as local
filesystem.. i'm able to save the chart..
but if i set path to be hdfs, then i'm unable to...
so what changes do i need to make..
You'll need to copy the local file to HDFS after it is rendered.
Thanks
Chandravadana.S
Steve Loughran wrote:
Alex Loddengaard wrote:
Hadoop runs Java code, so you can do anything that Java could do. This
means that you can create and/or analyze images. However, as Lukas has
said, Hadoop runs on a cluster of computers and is used for data storage
and
processing.
-If you are trying to do 2D graphics (AWT operations included) on unix
servers, you often need to have X11 up and running before the rendering
works
- You need to start whichever JVM runs your rendering code with the
property java.awt.headless=true; you can actually set this in your code.
-if the rendering code uses the OS/hardware, then different hardware can
render differently. This may not be visible to the eye, but it makes
testing more complex as the generated bitmaps can be slightly different
from machine to machine
-steve
--
Steve Loughran http://www.1060.org/blogxter/publish/5
Author: Ant in Action http://antbook.org/
--
Steve Loughran http://www.1060.org/blogxter/publish/5
Author: Ant in Action http://antbook.org/
