使用Java更新kafka中特定主题的TTL

更新主题的TTL,以便记录在主题中保留10天.我必须为特定主题执行此操作,只需将所有其他主题TTL保持相同,当前配置,我必须使用java执行此操作,因为我正在通过Java将主题推送到kafka.我正在设置以下属性以将主题推送到kafka

Properties props = new Properties();
props.put("bootstrap.servers", KAFKA_SERVERS);
props.put("acks", ACKS);
props.put("retries", RETRIES);
props.put("linger.ms", new Integer(LINGER_MS));
props.put("buffer.memory", new Integer(BUFFER_MEMORY));
props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

解决方法:

您可以使用AdminClient执行此操作,按照获取当前配置的代码片段(仅用于测试),然后在名为“test”的主题上更新“retention.ms”配置.

Properties props = new Properties();
props.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");

AdminClient adminClient = AdminClient.create(props);

ConfigResource resource = new ConfigResource(ConfigResource.Type.TOPIC, "test");

// get the current topic configuration
DescribeConfigsResult describeConfigsResult  =
        adminClient.describeConfigs(Collections.singleton(resource));

Map<ConfigResource, Config> config = describeConfigsResult.all().get();

System.out.println(config);

// create a new entry for updating the retention.ms value on the same topic
ConfigEntry retentionEntry = new ConfigEntry(TopicConfig.RETENTION_MS_CONFIG, "50000");
Map<ConfigResource, Config> updateConfig = new HashMap<ConfigResource, Config>();
updateConfig.put(resource, new Config(Collections.singleton(retentionEntry)));

AlterConfigsResult alterConfigsResult = adminClient.alterConfigs(updateConfig);
alterConfigsResult.all();

describeConfigsResult  = adminClient.describeConfigs(Collections.singleton(resource));

config = describeConfigsResult.all().get();

System.out.println(config);

adminClient.close();

标签：kafka-producer-api,java,apache-kafka
来源： https://codeday.me/bug/20190823/1699652.html