MaxHistoryNot Worked in logback-1.2.3?

[prabhu Mahendran]

I have tried below code to write logs based on SizeAndTimeBasedRollingPolicy
.

In that i can able to write files with respect to file size 100KB but not
able to maintain only 2 maxHistory files.It always write new file after
100KB successfully written.

Now i have using NiFI-1.3.0 which having logback version 1.2.3 for core and
classic jars.


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

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


<fileNamePattern>${org.apache.nifi.bootstrap.config.log.dir}/nifi-app_%d{yyyy-MM-dd}.%i.log</fileNamePattern>

            <maxFileSize>100 KB</maxFileSize>

            <!-- keep 30 log files worth of history -->

   <maxHistory>2</maxHistory>

   <historyAsFileCount>true</historyAsFileCount>



        </rollingPolicy>

        <encoder
class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">

            <pattern>%date %level [%thread] %logger{40} %msg%n</pattern>

        </encoder>

    </appender>



I have faced like issue that may belongs to below task.

https://jira.qos.ch/browse/LOGBACK-162

I have used NiFi-1.3.0 it only uses logback 1.2.3.

In NiFi i have found one jira for upgrade logback.

https://issues.apache.org/jira/browse/NIFI-3699

I think logback latest version is 1.2.3. Here it seems MaxHistory property
doesn't work.

Am i missing anythink?

Can anyone suggest me to solve this?