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From "Joshi, Rekha" <Rekha_Jo...@intuit.com>
Subject Re: About the log record in hadoop
Date Wed, 29 Aug 2012 11:40:53 GMT
Hi May,

Not sure which hadoop deployment you use (Cloudera/HortonWorks/Apache?), but hadoop wiki -
http://wiki.apache.org/hadoop/ can help
For tracing IO logs, check your map/reduce flow – Output Collector/Reporter/Context.To get
understanding of filesystem IO refer source under o.a.h.fs.* and possibly o.a.h.io.*


From: Li Shengmei <lishengmei@ict.ac.cn<mailto:lishengmei@ict.ac.cn>>
Reply-To: <user@hadoop.apache.org<mailto:user@hadoop.apache.org>>
Date: Wed, 29 Aug 2012 17:38:34 +0800
To: <user@hadoop.apache.org<mailto:user@hadoop.apache.org>>
Subject: About the log record in hadoop

Hi, all
         I want to do some study on the log of hadoop. I intend to konw how hadoop record
the IO in the logs. Does anyone do related work and give some suggestions? Which part of hadoop
source codes should be read carefully?


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