We had a similar problem with the date being off and this causing some errors but I don't think it was causing this error. Run this search on Google to find the threads talking about the lease expired issue

http://www.google.com/search?hl=en&q=%22Race+Condition+with+Renewing+Leases+and+RPC+Calls%22

That being said it is important to have the time synchronized between the machines and there are other errors (mostly stalls) that will occur if they are not synchronized.

Dennis Kubes

djames wrote:
Thanks a lot for your response,

I'm using nutch 0.8.1.
I will rebuid hadoop with the patch...
but i notice something, i'm running tasktracker on different VMware and the
date is not strictly the same with diference of 3 or five minutes. could it
be the reason of the buf?

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