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Hadoop logs and mapred.local.dir

+2 votes
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I have following queries with hadoop, please help me?
1. The size of mapred.local.dir is big(30 GB), how many methods could clean it correctly?
2. For logs of NameNode/DataNode/JobTracker/TaskTracker, are they all rolling type log? Whats their max size? I can not find the specific settings for them in log4j.properties.
3. I find the size of dfs.name.dir and dfs.data.dir is very big now, are there any files under them could be removed actually? Or all files under the two folders could not be removed at all?

posted May 11, 2014 by Kumar Mitrasen

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