Question

更新TTL主题，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保持相同的当前配置，我必须使用java执行此操作，因为我正在通过kafka将主题推送到kafka Java的。我正在设置以下属性以将主题推送到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");

unselect checkbox|id=blahblah

Answer 1

您可以使用AdminClient执行此操作，然后按照获取当前配置的代码段（仅用于测试），然后更新＆＃34; retention.ms＆＃34;配置名为＆＃34; test＆＃34;。

的主题

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();

使用Java更新kafka中特定主题的TTL

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