Hi,

I have configured log appenders to separate logs based on functionality. It looks as below:

Appender:

    <appender name="MOBILE_APPENDER" class="ch.qos.logback.core.rolling.RollingFileAppender">

        <file>${application.home}/logs/mobile.log</file>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

            <!-- daily rollover with compression -->

            <fileNamePattern>${application.home}/logs/mobile-log-%d{dd-MM-yyyy}.gz</fileNamePattern>

            <!-- keep 1 week worth of history -->

            <maxHistory>7</maxHistory>

        </rollingPolicy>

        <encoder>

            <pattern>%date{dd-MM-yyyy HH:mm:ss} %message%n</pattern>

            <!-- this quadruples logging throughput -->

            <immediateFlush>false</immediateFlush>

        </encoder>

    </appender>

Logger:

    <logger name="mobile" level="DEBUG" additivity="false">

        <appender-ref ref="MOBILE_APPENDER" />

    </logger>

Code:

Logger.of("mobile").debug("log statement");

Same configuration works well for other appenders and loggers for different log files. In the case of mobile log file, it gets split into multiple tmp files as below

mobile.log1069573507939492.tmp
mobile.log1156778511668518.tmp
mobile.log1420697709142498.tmp
mobile.log1503633156746801.tmp
mobile.log1674487680335483.tmp
mobile.log1761638721293414.tmp
mobile.log1932597676801911.tmp

Because of this, it does not get compressed at every midnight as per log rolling policy.

Any idea why it happens? 

Regards,

Suraj