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

Timestamp:

Jul 21, 2012, 10:30:43 AM (12 years ago)

Author:

jazz

Comment:

--

jazz/hadoop4win-dev

@@ -641 +641 @@
         at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:3742)
 }}}
+
+== 2012-07-21 ==
+
+ * 目前遇到的狀況已經有人反映在 [https://issues.apache.org/jira/browse/HADOOP-7682 HADOOP-7682]
+ * [解法] 參考 http://en.wikisource.org/wiki/User:Fkorning/Code/Hadoop-on-Cygwin 或 http://sourceforge.net/p/win-hadoop/wiki/Home/
+
+ * 學習用 log4j 進行除錯 
+ * 編輯 ${HADOOP_HOME}/conf/log4j.properties
+ * [1] [http://stackoverflow.com/questions/4821134/hadoop-enable-logging Hadoop enable logging]
+{{{
+log4j.logger.org.apache.hadoop = DEBUG
+}}}
+ * [2] 或把 hadoop.root.logger 從 INFO 改成 DEBUG
+{{{
+hadoop.root.logger=DEBUG,console
+}}}
+ * [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)
+{{{
+log4j.logger.org.apache.hadoop.mapred.TaskTracker=DEBUG
+}}}
+