{"id":1750,"date":"2020-10-02T17:14:21","date_gmt":"2020-10-02T09:14:21","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=1750"},"modified":"2020-10-02T17:14:21","modified_gmt":"2020-10-02T09:14:21","slug":"kafka%e7%9a%84%e6%9e%b6%e6%9e%84%e5%92%8c%e5%8f%82%e6%95%b0","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=1750","title":{"rendered":"kafka\u7684\u67b6\u6784\u548c\u53c2\u6570"},"content":{"rendered":"<h3>\u6982\u8981\u63cf\u8ff0<\/h3>\n<hr \/>\n<p>\u672c\u6587\u65e8\u5728\u4ecb\u7ecdkafka\u7684\u57fa\u7840\u67b6\u6784\u548c\u53c2\u6570<\/p>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<hr \/>\n<p>Kafka \u548c\u4f20\u7edf\u7684\u6d88\u606f\u7cfb\u7edf\u4e0d\u540c\u5728\u4e8e\uff1a<\/p>\n<p>\u2022 Kafka\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u7cfb\u7edf\uff0c\u6613\u4e8e\u5411\u5916\u6269\u5c55\u3002<\/p>\n<p>\u2022 \u5b83\u540c\u65f6\u4e3a\u53d1\u5e03\u548c\u8ba2\u9605\u63d0\u4f9b\u9ad8\u541e\u5410\u91cf\u3002<\/p>\n<p>\u2022 \u5b83\u652f\u6301\u591a\u8ba2\u9605\u8005\uff0c\u5f53\u5931\u8d25\u65f6\u80fd\u81ea\u52a8\u5e73\u8861\u6d88\u8d39\u8005\u3002<\/p>\n<p>\u2022 \u6d88\u606f\u7684\u6301\u4e45\u5316\u3002<\/p>\n<p><!--more--><\/p>\n<p><strong>kafka\u67b6\u6784\u56fe\uff1a<\/strong><\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2019\/12\/image-1577676864780.png\" alt=\"file\" \/><br \/>\n\u4e0a\u56fe\u4e2d\u4e00\u4e2atopic\u914d\u7f6e\u4e863\u4e2apartition\u3002Partition1\u6709\u4e24\u4e2aoffset\uff1a0\u548c1\u3002Partition2\u67094\u4e2aoffset\u3002Partition3\u67091\u4e2aoffset\u3002\u526f\u672c\u7684id\u548c\u526f\u672c\u6240\u5728\u7684\u673a\u5668\u7684id\u6070\u597d\u76f8\u540c\u3002<\/p>\n<p>\u5982\u679c\u4e00\u4e2atopic\u7684\u526f\u672c\u6570\u4e3a3\uff0c\u90a3\u4e48Kafka\u5c06\u5728\u96c6\u7fa4\u4e2d\u4e3a\u6bcf\u4e2apartition\u521b\u5efa3\u4e2a\u76f8\u540c\u7684\u526f\u672c\u3002\u96c6\u7fa4\u4e2d\u7684\u6bcf\u4e2abroker\u5b58\u50a8\u4e00\u4e2a\u6216\u591a\u4e2apartition\u3002\u591a\u4e2aproducer\u548cconsumer\u53ef\u540c\u65f6\u751f\u4ea7\u548c\u6d88\u8d39\u6570\u636e\u3002<\/p>\n<p>broker\u4ee5\u6d88\u606f\u5230\u8fbe\u7684\u987a\u5e8f\u8fdb\u884c\u5b58\u50a8\uff0c\u6bcf\u4e2a\u4e3b\u9898\u53ef\u4ee5\u914d\u7f6e\u5206\u533a\uff1b<\/p>\n<p><strong>\u5206\u533a\u5185\u90e8\u662f\u6709\u987a\u5e8f\u7684\uff0c\u5206\u533a\u4e4b\u95f4\u4e0d\u4fdd\u8bc1\u987a\u5e8f\uff1b<\/strong><\/p>\n<p>Kafka broker\u662f\u65e0\u72b6\u6001\u7684\uff0c\u5b83\u4e0d\u9700\u8981\u6807\u8bb0\u54ea\u4e9b\u6d88\u606f\u88ab\u54ea\u4e9b\u6d88\u8d39\u8fc7\uff0c\u4e5f\u4e0d\u9700\u8981\u901a\u8fc7broker\u53bb\u4fdd\u8bc1\u540c\u4e00\u4e2aConsumer Group\u53ea\u6709\u4e00\u4e2aConsumer\u80fd\u6d88\u8d39\u67d0\u4e00\u6761\u6d88\u606f\uff0c\u56e0\u6b64\u4e5f\u5c31\u4e0d\u9700\u8981\u9501\u673a\u5236\uff0c\u8fd9\u4e5f\u4e3aKafka\u7684\u9ad8\u541e\u5410\u7387\u63d0\u4f9b\u4e86\u6709\u529b\u4fdd\u969c\uff1b<br \/>\n\u8fd9\u662fKafka\u7528\u6765\u5b9e\u73b0\u4e00\u4e2aTopic\u6d88\u606f\u7684\u5e7f\u64ad\uff08\u53d1\u7ed9\u6240\u6709\u7684Consumer\uff09\u548c\u5355\u64ad\uff08\u53d1\u7ed9\u67d0\u4e00\u4e2aConsumer\uff09\u7684\u624b\u6bb5\u3002\u4e00\u4e2aTopic\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2aConsumer Group\u3002\u5982\u679c\u9700\u8981\u5b9e\u73b0\u5e7f\u64ad\uff0c\u53ea\u8981\u6bcf\u4e2aConsumer\u6709\u4e00\u4e2a\u72ec\u7acb\u7684Group\u5c31\u53ef\u4ee5\u4e86\u3002\u8981\u5b9e\u73b0\u5355\u64ad\u53ea\u8981\u6240\u6709\u7684Consumer\u5728\u540c\u4e00\u4e2aGroup\u91cc\u3002\u7528Consumer Group\u8fd8\u53ef\u4ee5\u5c06Consumer\u8fdb\u884c\u81ea\u7531\u7684\u5206\u7ec4\u800c\u4e0d\u9700\u8981\u591a\u6b21\u53d1\u9001\u6d88\u606f\u5230\u4e0d\u540c\u7684Topic\uff1b<\/p>\n<p><strong>Topic \u548c Partition<\/strong><\/p>\n<p>\u5728 Kafka \u4e2d\u7684\u6bcf\u4e00\u6761\u6d88\u606f\u90fd\u6709\u4e00\u4e2a Topic\u3002\u4e00\u822c\u6765\u8bf4\u5728\u6211\u4eec\u5e94\u7528\u4e2d\u4ea7\u751f\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\uff0c\u90fd\u53ef\u4ee5\u8bbe\u7f6e\u4e0d\u540c\u7684\u4e3b\u9898\u3002<\/p>\n<p>\u4e00\u4e2a\u4e3b\u9898\u4e00\u822c\u4f1a\u6709\u591a\u4e2a\u6d88\u606f\u7684\u8ba2\u9605\u8005\uff0c\u5f53\u751f\u4ea7\u8005\u53d1\u5e03\u6d88\u606f\u5230\u67d0\u4e2a\u4e3b\u9898\u65f6\uff0c\u8ba2\u9605\u4e86\u8fd9\u4e2a\u4e3b\u9898\u7684\u6d88\u8d39\u8005\u90fd\u53ef\u4ee5\u63a5\u6536\u5230\u751f\u4ea7\u8005\u5199\u5165\u7684\u65b0\u6d88\u606f\u3002<br \/>\n<img decoding=\"async\" src=\"\/wp-content\/uploads\/2019\/12\/image-1575622702869.png\" alt=\"file\" \/><\/p>\n<p>kafka\u7684topic\u548c\u6d88\u8d39\u8005\u4e4b\u95f4\u662f\u591a\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u5047\u8bbe\u4e00\u4e2atopic\u5206\u4e3a0,1,2,3\u4e2a\u5206\u533a\uff0c \u4e00\u4e2a\u6d88\u8d39\u8005\u7ec4\u91cc\u9762\u5047\u8bbe\u67093\u4e2a\u6d88\u8d39\u8005\uff0c\u6bcf\u4e2a\u5206\u533a\u53ea\u80fd\u7531\u4e00\u4e2a\u6d88\u8d39\u8005\u7ec4\u91cc\u7684\u4e00\u4e2a\u6d88\u8d39\u8005\u6d88\u8d39\uff0c\u6bcf\u4e2a\u5206\u533a\u7684\u6570\u636e\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u4e0d\u540c\u5206\u533a\u53ef\u80fd\u7531\u540c\u4e00\u4e2a\u6d88\u8d39\u8005\u7ec4\u7684\u4e0d\u540c\u6d88\u8d39\u8005\u6d88\u8d39\u3002<\/p>\n<p>Kafka\u53ef\u4ee5\u5c06\u4e3b\u9898\u5212\u5206\u4e3a\u591a\u4e2a\u5206\u533a\uff08Partition\uff09\uff0c\u4f1a\u6839\u636e\u5206\u533a\u89c4\u5219\u9009\u62e9\u628a\u6d88\u606f\u5b58\u50a8\u5230\u54ea\u4e2a\u5206\u533a\u4e2d\uff0c\u53ea\u8981\u5982\u679c\u5206\u533a\u89c4\u5219\u8bbe\u7f6e\u7684\u5408\u7406\uff0c\u90a3\u4e48\u6240\u6709\u7684\u6d88\u606f\u5c06\u4f1a\u88ab\u5747\u5300\u7684\u5206\u5e03\u5230\u4e0d\u540c\u7684\u5206\u533a\u4e2d\uff0c\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86\u8d1f\u8f7d\u5747\u8861\u548c\u6c34\u5e73\u6269\u5c55\u3002\u53e6\u5916\uff0c\u591a\u4e2a\u8ba2\u9605\u8005\u53ef\u4ee5\u4ece\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5206\u533a\u4e2d\u540c\u65f6\u6d88\u8d39\u6570\u636e\uff0c\u4ee5\u652f\u6491\u6d77\u91cf\u6570\u636e\u5904\u7406\u80fd\u529b;<\/p>\n<p>\u5206\u533a\u7b56\u7565\u53c2\u8003\uff1a<a href=\"\/.\/?p=1719\">kafka \u5206\u533a\u7b56\u7565<\/a><\/p>\n<p>\u589e\u52a0\u5206\u533a\u53ef\u4ee5\u63d0\u4f9bkafka\u96c6\u7fa4\u7684\u541e\u5410\u91cf\u3002\u7136\u800c\uff0c\u4e5f\u5e94\u8be5\u610f\u8bc6\u5230\u96c6\u7fa4\u7684\u603b\u5206\u533a\u6570\u6216\u662f\u5355\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u5206\u533a\u6570\u8fc7\u591a\uff0c\u4f1a\u589e\u52a0\u4e0d\u53ef\u7528\u53ca\u5ef6\u8fdf\u7684\u98ce\u9669\uff1b\u5efa\u8bae\u5206\u533a\u6570=executor\u6570\u91cf<\/p>\n<p>\u5728 Kafka \u7684\u673a\u5668\u4e0a\uff0c\u6bcf\u4e2a Partition \u5176\u5b9e\u90fd\u4f1a\u5bf9\u5e94\u4e00\u4e2a\u65e5\u5fd7\u76ee\u5f55\uff0c\u5728\u76ee\u5f55\u4e0b\u9762\u4f1a\u5bf9\u5e94\u591a\u4e2a\u65e5\u5fd7\u5206\u6bb5(LogSegment)\u3002<\/p>\n<p>LogSegment \u6587\u4ef6\u7531\u4e24\u90e8\u5206\u7ec4\u6210\uff0c\u5206\u522b\u4e3a\u201c.index\u201d\u6587\u4ef6\u548c\u201c.log\u201d\u6587\u4ef6\uff0c\u5206\u522b\u8868\u793a\u4e3a Segment \u7d22\u5f15\u6587\u4ef6\u548c\u6570\u636e\u6587\u4ef6\u3002<\/p>\n<p>\u4efb\u4f55\u53d1\u5e03\u5230\u6b64 Partition \u7684\u6d88\u606f\u90fd\u4f1a\u88ab\u8ffd\u52a0\u5230 Log \u6587\u4ef6\u7684\u5c3e\u90e8\uff0c\u5728\u5206\u533a\u4e2d\u7684\u6bcf\u6761\u6d88\u606f\u90fd\u4f1a\u6309\u7167\u65f6\u95f4\u987a\u5e8f\u5206\u914d\u5230\u4e00\u4e2a\u5355\u8c03\u9012\u589e\u7684\u987a\u5e8f\u7f16\u53f7\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u7684 Offset\u3002Offset \u662f\u4e00\u4e2a Long \u578b\u7684\u6570\u5b57\u3002<\/p>\n<p>\u6211\u4eec\u901a\u8fc7\u8fd9\u4e2a Offset \u53ef\u4ee5\u786e\u5b9a\u4e00\u6761\u5728\u8be5 Partition \u4e0b\u7684\u552f\u4e00\u6d88\u606f\u3002\u5728 Partition \u4e0b\u9762\u662f\u4fdd\u8bc1\u4e86\u6709\u5e8f\u6027\uff0c\u4f46\u662f\u5728 Topic \u4e0b\u9762\u6ca1\u6709\u4fdd\u8bc1\u6709\u5e8f\u6027\u3002<br \/>\n\u751f\u4ea7\u8005\u4f1a\u6839\u636eoffset\u503c\u8f6e\u5faa\u5199\u5165partition\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2019\/12\/image-1575625193158.png\" alt=\"file\" \/><\/p>\n<p><strong>\u6d88\u8d39\u6a21\u578b<\/strong><\/p>\n<p>\u6d88\u606f\u7531\u751f\u4ea7\u8005\u53d1\u9001\u5230 Kafka \u96c6\u7fa4\u540e\uff0c\u4f1a\u88ab\u6d88\u8d39\u8005\u6d88\u8d39\u3002<\/p>\n<p>Kafka \u91c7\u53d6\u62c9\u53d6\u6a21\u578b(Poll)\uff0c\u7531\u81ea\u5df1\u63a7\u5236\u6d88\u8d39\u901f\u5ea6\uff0c\u4ee5\u53ca\u6d88\u8d39\u7684\u8fdb\u5ea6\uff0c\u6d88\u8d39\u8005\u53ef\u4ee5\u6309\u7167\u4efb\u610f\u7684\u504f\u79fb\u91cf\u8fdb\u884c\u6d88\u8d39\u3002<\/p>\n<p>\u6bd4\u5982\u6d88\u8d39\u8005\u53ef\u4ee5\u6d88\u8d39\u5df2\u7ecf\u6d88\u8d39\u8fc7\u7684\u6d88\u606f\u8fdb\u884c\u91cd\u65b0\u5904\u7406\uff0c\u6216\u8005\u6d88\u8d39\u6700\u8fd1\u7684\u6d88\u606f\u7b49\u7b49\u3002<\/p>\n<p>Kafka\u5b9e\u9645\u73af\u5883\u6709\u53ef\u80fd\u4f1a\u51fa\u73b0Consumer\u5168\u90e8\u5b95\u673a\uff0c\u867d\u7136\u57fa\u4e8eKafka\u7684\u9ad8\u53ef\u7528\u7279\u6027\uff0c\u6d88\u8d39\u8005\u7fa4\u7ec4\u4e2d\u7684\u6d88\u8d39\u8005\u53ef\u4ee5\u5b9e\u73b0\u518d\u5747\u8861\uff0c\u6240\u6709Consumer\u4e0d\u5904\u7406\u6570\u636e\u7684\u60c5\u51b5\u5f88\u5c11\uff0c\u4f46\u662f\u8fd8\u662f\u6709\u53ef\u80fd\u4f1a\u51fa\u73b0\uff0c\u6b64\u65f6\u5c31\u8981\u6c42Consumer\u91cd\u542f\u7684\u65f6\u5019\u80fd\u591f\u8bfb\u53d6\u5728\u5b95\u673a\u671f\u95f4Producer\u53d1\u9001\u7684\u6570\u636e\u3002<\/p>\n<p>\u901a\u8fc7\u6d88\u8d39\u8005\u547d\u4ee4\u884c\u53ef\u4ee5\u5b9e\u73b0\uff0c\u53ea\u8981\u5728\u547d\u4ee4\u884c\u4e2d\u52a0\u4e0a&#8211;from-beginning\u5373\u53ef \uff08\u4ece\u6700\u5c0f\u503c\u6d88\u8d39\uff09<br \/>\n<img decoding=\"async\" src=\"\/wp-content\/uploads\/2019\/12\/image-1576144556830.png\" alt=\"file\" \/><\/p>\n<p><strong>\u9ad8\u53ef\u9760\u5206\u5e03\u5f0f\u5b58\u50a8\u6a21\u578b<\/strong><br \/>\n\u5728 Kafka \u4e2d\u4fdd\u8bc1\u9ad8\u53ef\u9760\u6a21\u578b\u4f9d\u9760\u7684\u662f\u526f\u672c\u673a\u5236\uff0c\u6709\u4e86\u526f\u672c\u673a\u5236\u4e4b\u540e\uff0c\u5c31\u7b97\u673a\u5668\u5b95\u673a\u4e5f\u4e0d\u4f1a\u53d1\u751f\u6570\u636e\u4e22\u5931\u3002<\/p>\n<p><strong>\u9ad8\u6027\u80fd\u7684\u65e5\u5fd7\u5b58\u50a8<\/strong><\/p>\n<p>Kafka \u4e00\u4e2a Topic \u4e0b\u9762\u7684\u6240\u6709\u6d88\u606f\u90fd\u662f\u4ee5 Partition \u7684\u65b9\u5f0f\u5206\u5e03\u5f0f\u7684\u5b58\u50a8\u5728\u591a\u4e2a\u8282\u70b9\u4e0a\u3002<\/p>\n<p>\u4f46\u662f Kafka \u6709\u4e2a\u95ee\u9898\uff0c\u5982\u679c\u5206\u533a\u8fc7\u591a\uff0c\u90a3\u4e48\u65e5\u5fd7\u5206\u6bb5\u4e5f\u4f1a\u5f88\u591a\uff0c\u5199\u7684\u65f6\u5019\u7531\u4e8e\u662f\u6279\u91cf\u5199\uff0c\u5176\u5b9e\u5c31\u4f1a\u53d8\u6210\u968f\u673a\u5199\u4e86\uff0c\u968f\u673a I\/O \u8fd9\u4e2a\u65f6\u5019\u5bf9\u6027\u80fd\u5f71\u54cd\u5f88\u5927\u3002\u6240\u4ee5\u4e00\u822c\u6765\u8bf4 Kafka \u4e0d\u80fd\u6709\u592a\u591a\u7684 Partition\u3002<\/p>\n<p>\u672a\u5f00\u5b89\u5168\u96c6\u7fa4\u5185\u7684kafka consumer\u548cbroker\u4fe1\u606f\u90fd\u662f\u5b58\u50a8\u5728zk\u4e0a\u7684\uff1a<br \/>\n<img decoding=\"async\" src=\"\/wp-content\/uploads\/2019\/12\/image-1576229708966.png\" alt=\"file\" \/><\/p>\n<p>\u5f00\u542f\u5b89\u5168\u4e4b\u540e\u4fe1\u606f\u662f\u5b58\u50a8\u5728broker\u4e0a\u7684__consumer_offset \u8fd9\u4e2atopic<\/p>\n<p>\u67e5\u8be2offset\u4ee5\u53cagroup\u4fe1\u606f\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-sql\">.\/kafka-console-consumer.sh --bootstrap-server 172.22.17.1:9092 --topic __consumer_offsets --consumer.config \/root\/TDH-Client\/kafka\/config\/consumer.properties --formatter \"kafka.coordinator.GroupMetadataManager\\$OffsetsMessageFormatter\"<\/code><\/pre>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2019\/12\/image-1576230197874.png\" alt=\"file\" \/><\/p>\n<p><strong>\u526f\u672c\u673a\u5236<\/strong><\/p>\n<p>Kafka \u7684\u526f\u672c\u673a\u5236\u662f\u591a\u4e2a\u670d\u52a1\u7aef\u8282\u70b9\u5bf9\u5176\u4ed6\u8282\u70b9\u7684\u4e3b\u9898\u5206\u533a\u7684\u65e5\u5fd7\u8fdb\u884c\u590d\u5236\u3002<\/p>\n<p>\u5f53\u96c6\u7fa4\u4e2d\u7684\u67d0\u4e2a\u8282\u70b9\u51fa\u73b0\u6545\u969c\uff0c\u8bbf\u95ee\u6545\u969c\u8282\u70b9\u7684\u8bf7\u6c42\u4f1a\u88ab\u8f6c\u79fb\u5230\u5176\u4ed6\u6b63\u5e38\u8282\u70b9(\u8fd9\u4e00\u8fc7\u7a0b\u901a\u5e38\u53eb Reblance)\u3002<\/p>\n<p>Kafka \u6bcf\u4e2a\u4e3b\u9898\u7684\u6bcf\u4e2a\u5206\u533a\u90fd\u6709\u4e00\u4e2a\u4e3b\u526f\u672c\u4ee5\u53ca 0 \u4e2a\u6216\u8005\u591a\u4e2a\u526f\u672c\uff0c\u526f\u672c\u4fdd\u6301\u548c\u4e3b\u526f\u672c\u7684\u6570\u636e\u540c\u6b65\uff0c\u5f53\u4e3b\u526f\u672c\u51fa\u6545\u969c\u65f6\u5c31\u4f1a\u88ab\u66ff\u4ee3\u3002<\/p>\n<p>\u5728 Kafka \u4e2d\u5e76\u4e0d\u662f\u6240\u6709\u7684\u526f\u672c\u90fd\u80fd\u88ab\u62ff\u6765\u66ff\u4ee3\u4e3b\u526f\u672c\uff0c\u6240\u4ee5\u5728 Kafka \u7684 Leader \u8282\u70b9\u4e2d\u7ef4\u62a4\u7740\u4e00\u4e2a ISR(In Sync Replicas)\u96c6\u5408\u3002<\/p>\n<p>\u7ffb\u8bd1\u8fc7\u6765\u4e5f\u53eb\u6b63\u5728\u540c\u6b65\u4e2d\u96c6\u5408\uff0c\u5728\u8fd9\u4e2a\u96c6\u5408\u4e2d\u7684\u9700\u8981\u6ee1\u8db3\u4e24\u4e2a\u6761\u4ef6\uff1a<\/p>\n<p>\u2022 \u8282\u70b9\u5fc5\u987b\u548c ZK \u4fdd\u6301\u8fde\u63a5\u3002<\/p>\n<p>\u2022 \u5728\u540c\u6b65\u7684\u8fc7\u7a0b\u4e2d\u8fd9\u4e2a\u526f\u672c\u4e0d\u80fd\u843d\u540e\u4e3b\u526f\u672c\u592a\u591a\u3002<\/p>\n<p>\u53e6\u5916\u8fd8\u6709\u4e2a AR(Assigned Replicas)\u7528\u6765\u6807\u8bc6\u526f\u672c\u7684\u5168\u96c6\uff0cOSR \u7528\u6765\u8868\u793a\u7531\u4e8e\u843d\u540e\u88ab\u5254\u9664\u7684\u526f\u672c\u96c6\u5408\u3002<\/p>\n<p>\u6240\u4ee5\u516c\u5f0f\u5982\u4e0b\uff1aISR = Leader + \u6ca1\u6709\u843d\u540e\u592a\u591a\u7684\u526f\u672c;AR = OSR+ ISR\u3002<\/p>\n<p><strong>exactly-once<\/strong><\/p>\n<p>\u521a\u597d\u4e00\u6b21\uff0c\u5373\u4f7f Producer \u91cd\u8bd5\u53d1\u9001\u6d88\u606f\uff0c\u6d88\u606f\u4e5f\u4f1a\u4fdd\u8bc1\u6700\u591a\u4e00\u6b21\u5730\u4f20\u9012\u7ed9 Consumer\u3002\u8be5\u8bed\u4e49\u662f\u6700\u7406\u60f3\u7684\uff0c\u4e5f\u662f\u6700\u96be\u5b9e\u73b0\u7684\u3002<\/p>\n<p>\u5728 0.10 \u4e4b\u524d\u5e76\u4e0d\u80fd\u4fdd\u8bc1 exactly-once\uff0c0.11.0 \u4f7f\u7528\u4e8b\u52a1\u4fdd\u8bc1\u4e86\u3002<\/p>\n<p>\u5982\u4f55\u5b9e\u73b0 exactly-once<\/p>\n<p>\u8981\u5b9e\u73b0 exactly-once \u5728 Kafka 0.11.0 \u4e2d\u6709\u4e24\u4e2a\u5b98\u65b9\u7b56\u7565\uff1a<\/p>\n<p>\u5355 Producer \u5355 Topic<\/p>\n<p>\u6bcf\u4e2a Producer \u5728\u521d\u59cb\u5316\u7684\u65f6\u5019\u90fd\u4f1a\u88ab\u5206\u914d\u4e00\u4e2a\u552f\u4e00\u7684 PID\uff0c\u5bf9\u4e8e\u6bcf\u4e2a\u552f\u4e00\u7684 PID\uff0cProducer \u5411\u6307\u5b9a\u7684 Topic \u4e2d\u67d0\u4e2a\u7279\u5b9a\u7684 Partition \u53d1\u9001\u7684\u6d88\u606f\u90fd\u4f1a\u643a\u5e26\u4e00\u4e2a\u4ece 0 \u5355\u8c03\u9012\u589e\u7684 Sequence Number\u3002<\/p>\n<p>\u5728\u6211\u4eec\u7684 Broker \u7aef\u4e5f\u4f1a\u7ef4\u62a4\u4e00\u4e2a\u7ef4\u5ea6\uff0c\u6bcf\u6b21\u63d0\u4ea4\u4e00\u6b21\u6d88\u606f\u7684\u65f6\u5019\u90fd\u4f1a\u5bf9\u9f50\u8fdb\u884c\u6821\u9a8c\uff1a<\/p>\n<p>\u2022 \u5982\u679c\u6d88\u606f\u5e8f\u53f7\u6bd4 Broker \u7ef4\u62a4\u7684\u5e8f\u53f7\u5927\u4e00\u4ee5\u4e0a\uff0c\u8bf4\u660e\u4e2d\u95f4\u6709\u6570\u636e\u5c1a\u672a\u5199\u5165\uff0c\u4e5f\u5373\u4e71\u5e8f\uff0c\u6b64\u65f6 Broker \u62d2\u7edd\u8be5\u6d88\u606f\uff0cProducer \u629b\u51fa InvalidSequenceNumber\u3002<\/p>\n<p>\u2022 \u5982\u679c\u6d88\u606f\u5e8f\u53f7\u5c0f\u4e8e\u7b49\u4e8e Broker \u7ef4\u62a4\u7684\u5e8f\u53f7\uff0c\u8bf4\u660e\u8be5\u6d88\u606f\u5df2\u88ab\u4fdd\u5b58\uff0c\u5373\u4e3a\u91cd\u590d\u6d88\u606f\uff0cBroker \u76f4\u63a5\u4e22\u5f03\u8be5\u6d88\u606f\uff0cProducer \u629b\u51fa DuplicateSequenceNumber\u3002<\/p>\n<p>\u5982\u679c\u6d88\u606f\u5e8f\u53f7\u521a\u597d\u5927\u4e00\uff0c\u5c31\u8bc1\u660e\u662f\u5408\u6cd5\u7684\u3002<\/p>\n<p>\u4e0a\u9762\u6240\u8bf4\u7684\u89e3\u51b3\u4e86\u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n<p>\u2022 \u5f53 Prouducer \u53d1\u9001\u4e86\u4e00\u6761\u6d88\u606f\u4e4b\u540e\u5931\u8d25\uff0cBroker \u5e76\u6ca1\u6709\u4fdd\u5b58\uff0c\u4f46\u662f\u7b2c\u4e8c\u6761\u6d88\u606f\u5374\u53d1\u9001\u6210\u529f\uff0c\u9020\u6210\u4e86\u6570\u636e\u7684\u4e71\u5e8f\u3002<\/p>\n<p>\u2022 \u5f53 Producer \u53d1\u9001\u4e86\u4e00\u6761\u6d88\u606f\u4e4b\u540e\uff0cBroker \u4fdd\u5b58\u6210\u529f\uff0cAck \u56de\u4f20\u5931\u8d25\uff0cProducer \u518d\u6b21\u6295\u9012\u91cd\u590d\u7684\u6d88\u606f\u3002<\/p>\n<p>\u4e0a\u9762\u6240\u8bf4\u7684\u90fd\u662f\u5728\u540c\u4e00\u4e2a PID \u4e0b\u9762\uff0c\u610f\u5473\u7740\u5fc5\u987b\u4fdd\u8bc1\u5728\u5355\u4e2a Producer \u4e2d\u7684\u540c\u4e00\u4e2a Session \u5185\uff0c\u5982\u679c Producer \u6302\u4e86\uff0c\u88ab\u5206\u914d\u4e86\u65b0\u7684 PID\uff0c\u8fd9\u6837\u5c31\u65e0\u6cd5\u4fdd\u8bc1\u4e86\uff0c\u6240\u4ee5 Kafka \u4e2d\u53c8\u6709\u4e8b\u52a1\u673a\u5236\u53bb\u4fdd\u8bc1\u3002<\/p>\n<p><strong>kafka\u53c2\u6570\u8be6\u89e3:<\/strong><br \/>\n\u8be6\u7ec6\u53c2\u6570\u53ef\u4ee5\u53c2\u8003\u6587\u7ae0\uff1a<br \/>\n<a href=\"\/.\/?p=1730\">kafka \u53c2\u6570\u8be6\u89e3<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u63cf\u8ff0 \u672c\u6587\u65e8\u5728\u4ecb\u7ecdkafka\u7684\u57fa\u7840\u67b6\u6784\u548c\u53c2\u6570 \u8be6\u7ec6\u8bf4\u660e Kafka \u548c\u4f20\u7edf\u7684\u6d88\u606f\u7cfb\u7edf\u4e0d\u540c\u5728\u4e8e\uff1a \u2022 Kaf ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=1750\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1750","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/1750","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1750"}],"version-history":[{"count":2,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/1750\/revisions"}],"predecessor-version":[{"id":2490,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/1750\/revisions\/2490"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1750"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1750"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}