Hi,

I just tried this with your settings and it worked on my machine. Can your 
Flink processes write to the specified location? I think /opt might not be 
writable by your users. Maybe try putting something like /tmp/flink.log there.

Best,
Aljoscha

> On 9. Aug 2017, at 16:45, Hussein Baghdadi <hussein.baghd...@zalando.de> 
> wrote:
> 
> Hello,
> 
> We changed our log4j.properties file of our Flink cluster to:
> 
> log4j.appender.file=org.apache.log4j.RollingFileAppender
> log4j.appender.file.File=/opt/flink/log/flink.log
> log4j.appender.file.MaxFileSize=100MB
> log4j.appender.file.MaxBackupIndex=2
> log4j.appender.file.layout=org.apache.log4j.PatternLayout
> #log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p 
> %c{1}:%L - %m%n
> log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p 
> %-60c %x - %m%n
> 
> After deployment, flink.log is empty although the cluster is under usage. 
> Flink doesn't work with RollingFileAppender or something? Or we 
> misconfiguring something?
> 
> Thanks for help and time.

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