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KafkaLog4jAppender kafkaAppender = new KafkaLog4jAppender();
kafkaAppender.setBrokerList(broker);
kafkaAppender.setTopic(topic);
kafkaAppender.setCompressionType("gzip");
kafkaAppender.setSyncSend(false);
kafkaAppender.setLayout(new PatternLayout(layout));
kafkaAppender.activateOptions();
logger.addAppender(kafkaAppender);
logger.setLevel(Level.INFO);