Yelp/mrjob — Issue #249: local mode shouldn't block on stderr
Author: davidmarin
Created: 2011-11-01 00:51:01+00:00
State: open
Labels: Bug

`MRLocalJobRunner` should write stderr from mappers/reducers to a file rather than a pipe; under the current implementation, mappers/reducers may end up blocked waiting for other mappers/reducers to finish before the master process reads their stderr.

(Moving this to v0.3.1; we can live with this in v0.3.0, and I don't want to break anything.)