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From Gang Luo <lgpub...@yahoo.com.cn>
Subject task-specific parameter
Date Mon, 01 Feb 2010 14:02:14 GMT
Hi all,
Usually we set the parameter before the job starts. I am wondering whether we can do that
after the job starts, e.g. in a configure() method of a map task. Or can we even do that in
map function to dynamically tune the parameters? How about reduce side?

Besides, If I can do that in a specific task, are these modifications only visible to that
task, or do they have a global impact? (currently, I am focusing on io.sort.record.percent).

Thanks.

-Gang



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