On Apr 4, 2007, at 2:57 AM, Mathijs Homminga wrote:
Your reduce task may fail because there are too many values
associated with
some key and it takes more than 10 minutes to process the key.
Please try to
let your reduce task explicitly notify the task tracker that "I am
alive" by
doing report.setStatus(String) once, for example, every 100 or
1000 values.
By the way, a fix for this problem just went in yesterday:
https://issues.apache.org/jira/browse/HADOOP-1105
Furthermore, if all you want to do is say "I'm alive", it is better
to use:
report.progress().
-- Owen
