Mark Snow 2008-06-26, 03:07
-RE: Slow tutorial?
Amir Youssefi 2008-06-26, 19:29
pig.jar that comes with it is old and doesn't have pig.properties.
Try making a new build (June 26th or later) and make sure you have
these in pig.properties:
#Do not spill temp files smaller than this size (bytes)
#EXPERIMENT: Activate garbage collection when spilling a file bigger
than this size (bytes)
#This should help reduce the number of files being spilled.
or similar numbers...
From: Mark Snow [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, June 25, 2008 8:07 PM
To: [EMAIL PROTECTED]
Subject: Slow tutorial?
I downloaded the pig tutorial to give it a whirl, set it up on a hadoop
cluster I've used for a few other tasks (7 nodes, ec2) and went through
the instructions to launch tutorial script1 with the excite bz file on
hdfs. Two things jumped out:
1) Only one mapper launched
2) It's really slow. It's been almost 5 hours and still under 10% of the
mapper is completed
Have I misconfigured something? What's a good benchmark run time for the
tutorial scripts to complete?
Amir Youssefi 2008-06-26, 19:53
Amir Youssefi 2008-06-26, 21:06
Amir Youssefi 2008-06-26, 21:12