Apache Flink RollingFileAppender [英] Apache Flink RollingFileAppender

问题描述

我正在使用Apache Flink v1.2.我想切换到滚动文件追加程序，以避免几天之内包含数据的巨大日志文件.但是，它似乎不起作用.我修改了log4j配置( log4j.properties )，如下所示:

I'm using Apache Flink v1.2. I wanted to switch to a rolling file appender to avoid huge log files containing data for several days. However it doesn't seem to work. I adapted the log4j Configuration (log4j.properties) as follows:

log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.RollingPolicy=org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.file.DatePattern='.' yyyy-MM-dd-a'.log'
log4j.appender.file.MaxBackupIndex = 15
log4j.appender.file.append=false
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p %-60c %x - %m%n

首先，它抱怨找不到 org.apache.log4j.rolling.RollingFileAppender .所以我将其切换到 org.apache.log4j.RollingFileAppender ，然后说 RollingPolicy 和 DatePattern 对于 RollingFileAppender来说不是有效的属性.

First it complains it cannot find org.apache.log4j.rolling.RollingFileAppender. So I switch it to org.apache.log4j.RollingFileAppender and then it says RollingPolicy and DatePattern are not valid attributes for the RollingFileAppender.

其他任何人都遇到过同样的问题吗?您能提出这个配置有什么问题吗?

Did anyone else encounter same issues / can you suggest what's wrong with this configuration?

推荐答案

要使用 RollingFileAppender ，您首先必须添加 apache-log4j-extras-1.2.17.jar到您的类路径(例如，将其添加到Flink的 lib 文件夹中).

In order to use the RollingFileAppender you first have to add the apache-log4j-extras-1.2.17.jar to your classpath (e.g. adding it to Flink's lib folder).

接下来，您必须先配置它并指定 FileNamePattern ，然后再指定 RollingPolicy .通过以下 log4j.properties 文件，我可以使用 RollingFileAppender .

Next you have to configure it and specify a FileNamePattern before specifying the RollingPolicy. With the following log4j.properties file I can use the RollingFileAppender.

log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.RollingPolicy.FileNamePattern=logs/log.%d{yyyyMMdd-HHmm}.log
log4j.appender.file.RollingPolicy=org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.file.append=false
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p %-60c %x - %m%n

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