Delay in Kafka Log4j appender Code Answer

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So here is my setup, and this is all being done in Eclipse

  1. I am trying to implement the Kafka Log4j appender to pump messages into Kafka.

  2. I have some java code setup to create the log messages:

    public static void main(String[] args) {
    SimpleDateFormat sdf = new SimpleDateFormat();
    log.debug("Debug message at "+sdf.format(new Date()));"Info message at "+sdf.format(new Date()));
    log.error("Error Message at "+sdf.format(new Date()));
    log.fatal("Fatal Message at "+sdf.format(new Date()));
    log.warn("Warn Message at "+sdf.format(new Date()));
    log.trace("Trace Message at "+sdf.format(new Date()));
  3. here are my

    log4j.rootLogger=TRACE, stdout
    log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L %% %m%n
    log4j.appender.KAFKA.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L %% - %m%n
    log4j.logger.logGen.TestLog4j=TRACE, KAFKA
  4. In another instance of Eclipse, i have my Kafka consumer code running which basically prints out any messages it receieves

Here is my problem,

When i execute my log producer, i do not always see the messages in the consumer. sometimes i see the messages and sometimes i do not. Sometimes i can execute the producer repeatedly for a few seconds and each time i see the messages, but other times, the consumer only gets them once and not for the next minute or so. then it starts receiving again. so the messages that i pushed in the meantime are lost.

Is there anyway that there can be a delay when Kafka published the messages ?

Can it have something to do with my Kafka or Zookeeper configurations ?

I am executing everything on localhost

Please advise.



fixed it.

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