在运行时更改kafka保留期

Question

使用Kafka 0.8.1.1,如何在运行时更改日志保留时间？该文件说,财产是log.retention.hours,而是试图用它来改变kafka-topics.sh返回此错误

$ bin/kafka-topics.sh --zookeeper zk.yoursite.com --alter --topic as-access --config topic.log.retention.hours=24
Error while executing topic command requirement failed: Unknown configuration "topic.log.retention.hours".
java.lang.IllegalArgumentException: requirement failed: Unknown configuration "topic.log.retention.hours".
    at scala.Predef$.require(Predef.scala:145)
    at kafka.log.LogConfig$$anonfun$validateNames$1.apply(LogConfig.scala:138)
    at kafka.log.LogConfig$$anonfun$validateNames$1.apply(LogConfig.scala:137)
    at scala.collection.Iterator$class.foreach(Iterator.scala:631)
    at scala.collection.JavaConversions$JEnumerationWrapper.foreach(JavaConversions.scala:479)
    at kafka.log.LogConfig$.validateNames(LogConfig.scala:137)
    at kafka.log.LogConfig$.validate(LogConfig.scala:145)
    at kafka.admin.TopicCommand$.parseTopicConfigsToBeAdded(TopicCommand.scala:171)
    at kafka.admin.TopicCommand$$anonfun$alterTopic$1.apply(TopicCommand.scala:95)
    at kafka.admin.TopicCommand$$anonfun$alterTopic$1.apply(TopicCommand.scala:93)
    at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:57)
    at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:43)
    at kafka.admin.TopicCommand$.alterTopic(TopicCommand.scala:93)
    at kafka.admin.TopicCommand$.main(TopicCommand.scala:52)
    at kafka.admin.TopicCommand.main(TopicCommand.scala)

Answer 1

log.retention.hours是代理的属性,在创建主题时用作默认值.更改当前正在运行的主题的配置时kafka-topics.sh,应指定主题级属性.

日志保留时间的主题级属性是retention.ms.

从Kafka 0.8.1文档中的主题级配置:

• 属性:retention.ms
• 默认值:7天
• 服务器默认属性:log.retention.minutes
• 描述:如果我们使用"删除"保留策略,此配置将控制我们在保留旧日志段以释放空间之前保留日志的最长时间.这表示消费者必须多快阅读其数据的SLA.

所以正确的命令是

$ bin/kafka-topics.sh --zookeeper zk.yoursite.com --alter --topic as-access --config retention.ms=86400000

您可以使用以下命令检查配置是否正确应用.

$ bin/kafka-topics.sh --describe --zookeeper zk.yoursite.com --topic as-access

然后你会看到类似下面的东西.

Topic:as-access  PartitionCount:3  ReplicationFactor:3  Configs:retention.ms=86400000

Answer 2

以下是从Kafka 0.10.2.0开始更改主题配置的正确方法:

bin/kafka-configs.sh --zookeeper <zk_host> --alter --entity-type topics --entity-name test_topic --add-config retention.ms=86400000

已弃用主题配置更改操作bin/kafka-topics.sh.

WARNING: Altering topic configuration from this script has been deprecated and may be removed in future releases.
     Going forward, please use kafka-configs.sh for this functionality`

Answer 3

正确的配置密钥是 retention.ms

$ bin/kafka-topics.sh --zookeeper zk.prod.yoursite.com --alter --topic as-access --config retention.ms=86400000
Updated config for topic "my-topic".