Jobtracker throws GC overhead limit exceeded

2011-07-05 Thread Meghana
Hi, We are using Hadoop 0.19 on a small cluster of 7 machines (7 datanodes, 4 task trackers), and we typically have 3-4 jobs running at a time. We have been facing the following error on the Jobtracker: java.io.IOException: java.lang.OutOfMemoryError: GC overhead limit exceeded It seems to be

Re: Jobtracker throws GC overhead limit exceeded

2011-07-05 Thread Arun C Murthy
Meghana, What is the heapsize for your JT? Try increasing that. Also, we've fixed a huge number of issues in the JT (and Hadoop overall) since 0.19. Can you upgrade to 0.20.203, the latest stable release? thanks, Arun Sent from my iPhone On Jul 4, 2011, at 11:10 PM, Meghana

Re: Jobtracker throws GC overhead limit exceeded

2011-07-05 Thread Meghana
Hey Arun, The JT heapsize (Xmx) is 512m. Will try increasing it, thanks! Yes, migrating to 0.20 is definitely on my to-do list, but some urgent issues have taken priority for now :( Thanks, ..meghana On 5 July 2011 12:25, Arun C Murthy a...@hortonworks.com wrote: Meghana, What is the