kafka怎么保存消費端的消費位置

本篇內容介紹了“kafka怎么保存消費端的消費位置”的有關知識，在實際案例的操作過程中，不少人都會遇到這樣的困境，接下來就讓小編帶領大家學習一下如何處理這些情況吧！希望大家仔細閱讀，能夠學有所成！

在kafka 中，提供了一個 ___consumer_ offsets_* 的一個內置topic

• __consumer_offsets 默認分區50

• 創建consumer_offsets_group 消費組ID 稍后會用到

• Math.abs("consumer_offsets_group".hashCode()) % 50

• 結果放在了11分區上

• 通過如下公式即可獲取：

• 查看該消費群offsets：

• bin/kafka-console-consumer.sh --topic __consumer_offsets --partition 11 --bootstrap-server localhost:9092 --formatter "kafka.coordinator.group.GroupMetadataManager\$OffsetsMessageFormatter" --consumer.config config/consumer.properties --from-beginning

• 結果：

• [consumer_offsets_group/*消費組ID*/,consumer_offsets_test/*topic*/,1/*partition*/]::OffsetAndMetadata(offset=4/*提交的消費位移信息*/, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567461031, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,0]::OffsetAndMetadata(offset=3, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567461031, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,2]::OffsetAndMetadata(offset=4, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567461031, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,1]::OffsetAndMetadata(offset=4, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567466027, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,0]::OffsetAndMetadata(offset=3, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567466027, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,2]::OffsetAndMetadata(offset=4, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567466027, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,1]::OffsetAndMetadata(offset=4, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567468638, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,0]::OffsetAndMetadata(offset=3, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567468638, expireTimestamp=None)
  [consumer_offsets_group,consumer_offsets_test,2]::OffsetAndMetadata(offset=4, leaderEpoch=Optional.empty, metadata=, commitTimestamp=1543567468638, expireTimestamp=None)

“kafka怎么保存消費端的消費位置”的內容就介紹到這里了，感謝大家的閱讀。如果想了解更多行業相關的知識可以關注億速云網站，小編將為大家輸出更多高質量的實用文章！