pulsar-client-kafka-compat/pulsar-client-kafka/src/main/java/org/apache/kafka/clients/producer/PulsarKafkaProducer.java [154:177]:
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            logger.error(errorMessage);
            throw new IllegalArgumentException(errorMessage);
        } catch (PulsarClientException e) {
            throw new RuntimeException(e);
        }

        pulsarProducerBuilder = PulsarProducerKafkaConfig.getProducerBuilder(client, properties);

        // To mimic the same batching mode as Kafka, we need to wait a very little amount of
        // time to batch if the client is trying to send messages fast enough
        long lingerMs = Long.parseLong(properties.getProperty(ProducerConfig.LINGER_MS_CONFIG, "1"));
        pulsarProducerBuilder.batchingMaxPublishDelay(lingerMs, TimeUnit.MILLISECONDS);

        String compressionType = properties.getProperty(ProducerConfig.COMPRESSION_TYPE_CONFIG);
        if ("gzip".equals(compressionType)) {
            pulsarProducerBuilder.compressionType(CompressionType.ZLIB);
        } else if ("lz4".equals(compressionType)) {
            pulsarProducerBuilder.compressionType(CompressionType.LZ4);
        }

        pulsarProducerBuilder.messageRouter(new KafkaMessageRouter(lingerMs));

        int sendTimeoutMillis = Integer.parseInt(properties.getProperty(ProducerConfig.REQUEST_TIMEOUT_MS_CONFIG, "30000"));
        pulsarProducerBuilder.sendTimeout(sendTimeoutMillis, TimeUnit.MILLISECONDS);
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pulsar-client-kafka-compat/pulsar-client-kafka_0_9/src/main/java/org/apache/kafka/clients/producer/PulsarKafkaProducer.java [142:165]:
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            logger.error(errorMessage);
            throw new IllegalArgumentException(errorMessage);
        } catch (PulsarClientException e) {
            throw new RuntimeException(e);
        }

        pulsarProducerBuilder = PulsarProducerKafkaConfig.getProducerBuilder(client, properties);

        // To mimic the same batching mode as Kafka, we need to wait a very little amount of
        // time to batch if the client is trying to send messages fast enough
        long lingerMs = Long.parseLong(properties.getProperty(ProducerConfig.LINGER_MS_CONFIG, "1"));
        pulsarProducerBuilder.batchingMaxPublishDelay(lingerMs, TimeUnit.MILLISECONDS);

        String compressionType = properties.getProperty(ProducerConfig.COMPRESSION_TYPE_CONFIG);
        if ("gzip".equals(compressionType)) {
            pulsarProducerBuilder.compressionType(CompressionType.ZLIB);
        } else if ("lz4".equals(compressionType)) {
            pulsarProducerBuilder.compressionType(CompressionType.LZ4);
        }

        pulsarProducerBuilder.messageRouter(new KafkaMessageRouter(lingerMs));

        int sendTimeoutMillis = Integer.parseInt(properties.getProperty(ProducerConfig.REQUEST_TIMEOUT_MS_CONFIG, "30000"));
        pulsarProducerBuilder.sendTimeout(sendTimeoutMillis, TimeUnit.MILLISECONDS);
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