如何为oozi java工作流程启用/设置log4j？ [英] How to enable/setup log4j for oozi java workflows?

问题描述

我正在运行一个Oozie Java工作流程（jar文件位于HDFS中），我想为我的应用程序添加日志记录功能。有人知道该怎么做吗？我应该在哪里放置我的log4j.properties文件？我如何使log4j将日志输出到HDFS中的某个位置？

/oozie.apache.org/docs/3.3.0/AG_OozieLogging.htmlrel =nofollow noreferrer>本文档，您可以尝试添加 oozie-log4j.properties


以下是默认设置：<$ c $>您的oozie目录（其中 workflow.xml 是）。

/ p>

  log4j.appender.oozie = org.apache.log4j.rolling.RollingFileAppender 
 log4j.appender.oozie.RollingPolicy = org.apache.oozie.util.OozieRollingPolicy 
 log4j.appender.oozie.File = $ {oozie.log.dir} /oozie.log 
 log4j.appender.oozie.Append = true 
 log4j.appender.oozie.layout = org.apache.log4j.PatternLayout 
 log4j.appender.oozie.layout.ConversionPattern =％d {ISO8601}％5p％c {1}：％L  - ％m％n 
 log4j.appender.oozie.RollingPolicy.FileNamePattern = $ {log4j.appender.oozie.File}  - ％d {yyyy-MM-dd-HH} 
 log4j.appender.oozie.RollingPolicy.MaxHistory = 720 
  

它还概述了以下限制：

为了使Oozie日志记录工作100 ％正确，必须遵守以下限制（在下面和oozie-log4j.properties文件中描述）：

Oozie使用的appender必须命名为oozie（即


• log4j.appender.oozie.RollingPolicy.FileNamePattern 必须以 - ％d {yyyy-MM-dd-HH} .gz或 - ％d {yyyy-MM-dd-HH}。如果它以。gz结尾，则旧日志将在滚动时被压缩

  
  

• log4j.appender.oozie.RollingPolicy.FileNamePattern 必须以 log4j.appender.oozie.File

  的值开头。 / li>
  

I'm running an Oozie Java workflow (the jar file is in HDFS), and I'd like to add logging functionality to my application. Does anybody know how to do it? Where should I put my "log4j.properties" file? How can I make log4j to output the log to a location in HDFS?

解决方案

Looking in this documentation, you can try adding oozie-log4j.properties in your oozie directory (where workflow.xml is).

Here are the default settings:

log4j.appender.oozie=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.oozie.RollingPolicy=org.apache.oozie.util.OozieRollingPolicy
log4j.appender.oozie.File=${oozie.log.dir}/oozie.log
log4j.appender.oozie.Append=true
log4j.appender.oozie.layout=org.apache.log4j.PatternLayout
log4j.appender.oozie.layout.ConversionPattern=%d{ISO8601} %5p %c{1}:%L - %m%n
log4j.appender.oozie.RollingPolicy.FileNamePattern=${log4j.appender.oozie.File}-%d{yyyy-MM-dd-HH}
log4j.appender.oozie.RollingPolicy.MaxHistory=720

It also outlines the following restrictions:

In order for Oozie logging to work 100% correctly, the following restrictions must be observed (described below and in the oozie-log4j.properties file):

• The appender that Oozie uses must be named "oozie" (i.e. log4j.appender.oozie )

• log4j.appender.oozie.RollingPolicy.FileNamePattern must end with "-%d{yyyy-MM-dd-HH}.gz" or "-%d{yyyy-MM-dd-HH}". If it ends with ".gz" the old logs will be compressed when rolled

• log4j.appender.oozie.RollingPolicy.FileNamePattern must start with the value of log4j.appender.oozie.File

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