I am using log4j in my java application, but after some time without throwing any exception it stopped logging

my log4j configuration is as below.

```
log4j.rootLogger=INFO,FILE
log4j.appender.FILE=com.test.TestFIleAppender
log4j.appender.FILE.MaxFileSize=20MB
log4j.appender.FILE.MaxBackUpIndex=200

```

My file appender contains some code to do the zip operation and to specify the log file format and all.

This was logging fine for some time, but suddenly stopped logging , no exception also thrown

can any body tell me what can be the issue?

any body know any log4j related issues like this?