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		<title>log4j不打印log解决方案</title>
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		<pubDate>Mon, 01 Mar 2021 13:26:46 +0000</pubDate>
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					<description><![CDATA[log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory). log4j:WARN Please initialize the log4j system properly. 解决方法：src/main/resources下添加log4j.properties # Set root logger level to DEBUG and its o[......] 继续阅读]]></description>
		
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		<title>Hadoop执行时输出无法重定向</title>
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		<pubDate>Mon, 27 Aug 2012 11:48:46 +0000</pubDate>
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					<description><![CDATA[执行Hadoop任务时，会输出很多东西，没法重定向，貌似是stderr，不是stdout。 以下方法： hadoop xxxx 1&#62;0 2&#62;file_name[......] 继续阅读]]></description>
		
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