First few messages getting dropped

[mayank8318]

My Kafka Appender is as follows:

<appender name="fast-kafka-appender" class="com.github.danielwegener.logback.kafka.KafkaAppender">
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>

        <topic>intake-app-log</topic>
        <keyingStrategy class="com.github.danielwegener.logback.kafka.keying.NoKeyKeyingStrategy" />
        <deliveryStrategy class="com.github.danielwegener.logback.kafka.delivery.AsynchronousDeliveryStrategy" />

        <producerConfig>bootstrap.servers=localhost:9092</producerConfig>
        <producerConfig>acks=0</producerConfig>
        <!--<producerConfig>linger.ms=1000</producerConfig>-->
        <!-- even if the producer buffer runs full, do not block the application but start to drop messages -->
        <producerConfig>max.block.ms=0</producerConfig>
        <!--<producerConfig>batch.size=0</producerConfig>-->
        <!--<producerConfig>buffer.memory=43554432</producerConfig>-->
        <producerConfig>client.id=${HOSTNAME}-${CONTEXT_NAME}-logback-relaxed</producerConfig>
        <appender-ref ref="FILE" />
    </appender>

My initial log messages are getting dropped, I guess because of the lazy loading strategy of the producer -> #53 (comment)

I don't want these logs to go to the fallback appender. Also, I cannot increase max.block.ms > 0 as that blocks the application which is not acceptable for my use case. The workaround that I am using right now is when the application starts I do a dummy log and then sleep the thread for 500ms as follows :

logger.info("sacrifice me");
Thread.sleep(500);

This hack solved the problem for now. I wanted to know if there is any way of disabling the lazy loading strategy and if I am missing any option here?

Thanks

[yanovskiy-da]

increase max.block.ms helped fix dropped messages