Changes between Version 80 and Version 81 of jazz/hadoop4win-dev


Ignore:
Timestamp:
Jul 21, 2012, 10:30:43 AM (13 years ago)
Author:
jazz
Comment:

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  • jazz/hadoop4win-dev

    v80 v81  
    641641        at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:3742)
    642642}}}
     643
     644== 2012-07-21 ==
     645
     646 * 目前遇到的狀況已經有人反映在 [https://issues.apache.org/jira/browse/HADOOP-7682 HADOOP-7682]
     647 * [解法] 參考 http://en.wikisource.org/wiki/User:Fkorning/Code/Hadoop-on-Cygwin 或 http://sourceforge.net/p/win-hadoop/wiki/Home/
     648
     649 * 學習用 log4j 進行除錯
     650 * 編輯 ${HADOOP_HOME}/conf/log4j.properties
     651 * [1] [http://stackoverflow.com/questions/4821134/hadoop-enable-logging Hadoop enable logging]
     652{{{
     653log4j.logger.org.apache.hadoop = DEBUG
     654}}}
     655 * [2] 或把 hadoop.root.logger 從 INFO 改成 DEBUG
     656{{{
     657hadoop.root.logger=DEBUG,console
     658}}}
     659 * [3] 這次我想看的主要是 TaskTracker 的 BUG，也可以只打開以下的參數 (原 log4j.properties 內容已有這行，刪除註解即可)
     660{{{
     661log4j.logger.org.apache.hadoop.mapred.TaskTracker=DEBUG
     662}}}
     663