{"id":1719,"date":"2020-10-02T17:06:56","date_gmt":"2020-10-02T09:06:56","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=1719"},"modified":"2020-10-02T17:06:56","modified_gmt":"2020-10-02T09:06:56","slug":"kafka%e5%88%86%e5%8c%ba%e7%ad%96%e7%95%a5","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=1719","title":{"rendered":"kafka\u5206\u533a\u7b56\u7565"},"content":{"rendered":"<h3>\u6982\u8981\u63cf\u8ff0<\/h3>\n<hr \/>\n<p>\u5728kafka\u4e2d\uff0c\u6bcf\u4e2atopic\u4e00\u822c\u4f1a\u6709\u5f88\u591a\u4e2aPartitions\u3002\u4e3a\u4e86\u4f7f\u6211\u4eec\u80fd\u591f\u53ca\u65f6\u7684\u6d88\u8d39\u6d88\u606f\uff0c  \u6211\u4eec\u4e5f\u53ef\u80fd\u542f\u52a8\u591a\u4e2aConsumer\u53bb\u6d88\u8d39\u5206\u533a\uff0c\u800c\u6bcf\u4e2aConsumer\u540c\u6837\u4f1a\u542f\u52a8\u4e00\u4e2a\u6216\u8005\u662f\u591a\u4e2astreams\u53bb\u5206\u522b\u6d88\u8d39Topic\u91cc\u9762\u7684\u6570\u636e\u3002\u5728Kafka\u4e2d\u5b58\u5728\u7740Consumer Group\u7684\u6982\u5ff5\u3002topic\u4e5f\u6709\u5206\u533a\u7684\u6982\u5ff5\u3002\u90a3\u4e48\u540c\u4e00\u4e2aConsumer Group\u91cc\u9762\u7684Consumer\u662f\u5982\u4f55\u77e5\u9053\u8be5\u53bb\u6d88\u8d39\u54ea\u4e9b\u5206\u533a\u91cc\u9762\u7684\u6570\u636e\u5462\uff1f<\/p>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<hr \/>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2019\/12\/image-1575361176931.png\" alt=\"file\" \/><\/p>\n<p><!--more--><\/p>\n<p>\u5c31\u50cf\u4e0a\u9762\u56fe\u793a\uff0c Consumer 1 \u4e3a\u4ec0\u4e48\u6d88\u8d39\u7684\u662fPartition0 \u548cPartition2\u5462\uff1f\u800c\u4e0d\u662f\u6d88\u8d39\u7684Partition0\u548cPartition3\u5462\uff1f\u6216\u8005\u662f\u5176\u4ed6\u5462\uff1f\u8fd9\u5c31\u6d89\u53ca\u5230Kafka\u5185\u90e8\u5206\u914d\u7b56\u7565\uff08Partition Assignment Strategy\uff09<\/p>\n<p>\u8bf4\u5230Kafka\u5206\u533a\u5206\u914d\u7b56\u7565\uff0c\u5c31\u662f\u5b83\u7684\u5185\u90e8\u7684\u9ed8\u8ba4\u7684\u5206\u533a\u5206\u914d\u7b56\u7565\uff1aRange \u548c RoundRobin\uff08\u8f6e\u8be2\uff09\u3002\u5f53\u4e0b\u9762\u7684\u4e8b\u60c5\u53d1\u751f\u7684\u65f6\u5019\uff0cKafka\u5c06\u4f1a\u8fdb\u884c\u4e00\u6b21\u5206\u533a\u5206\u914d\u3002<\/p>\n<pre><code>    1\u3001\u5f53\u540c\u4e00\u4e2aConsumer Group \u5185\u65b0\u589e\u6d88\u8d39\u8005\u3002\uff08\u6d88\u8d39\u8005\u5c42\u9762\u53d1\u751f\u6539\u52a8\uff09\n\n    2\u3001\u6d88\u8d39\u8005\u79bb\u5f00\u5f53\u524d\u6240\u5c5e\u7684Consumer Group\uff0c\u5305\u62ecShuts down\uff08\u5173\u95ed\u3001\u505c\u5de5\uff09\u6216\u8005\u662fcrashes\uff08\u5d29\u6e83\uff09\u3002\uff08\u6d88\u8d39\u8005\u5c42\u9762\u53d1\u751f\u6539\u52a8\uff09\n\n    3\u3001\u5c31\u662f\u6d88\u8d39\u8005\u8ba2\u9605\u7684\u4e3b\u9898\u65b0\u589e\u5206\u533a\u7684\u65f6\u5019<\/code><\/pre>\n<p>\u5c06\u5206\u533a\u7684\u6240\u6709\u6743\u4ece\u4e00\u4e2a\u6d88\u8d39\u8005\u79fb\u5230\u53e6\u4e00\u4e2a\u6d88\u8d39\u8005\u6210\u4e3a\u91cd\u65b0\u5e73\u8861\uff08rebalance\uff09\uff0c\u5982\u4f55rebalance\u5c31\u6d89\u53ca\u5230\u5206\u533a\u5206\u914d\u7b56\u7565\u3002<\/p>\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a\u540d\u4e3aTop1\u7684\u4e3b\u9898\uff0c\u5b83\u6709\u5341\u4e2a\u5206\u533a\uff0c\u7136\u540e\u6709\u4e24\u4e2a\u6d88\u8d39\u8005\uff08C1\u3001C2\uff09\u6765\u6d88\u8d39\u8fd9\u5341\u4e2a\u5206\u533a\u91cc\u9762\u7684\u6570\u636e\uff0c\u800c\u4e14C1\u7684num.streams=1\uff0cC2\u7684num.streams=2\u3002<\/p>\n<h4>Range  Strategy\uff08\u6839\u636e\u8303\u56f4\u6d88\u8d39\uff09<\/h4>\n<pre><code>Range strategy\u662f\u5bf9\u6bcf\u4e2a\u4e3b\u9898\u800c\u8a00\u7684 \uff0c \u9996\u5148\u5bf9\u540c\u4e00\u4e2a\u4e3b\u9898\u91cc\u9762\u7684\u5206\u533a\u6309\u7167\u5e8f\u53f7\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u5bf9\u6d88\u8d39\u8005\u6309\u7167\u5b57\u6bcd\u8fdb\u884c\u6392\u5e8f\u3002\u5728\u5bf9\u5341\u4e2a\u5206\u533a\u6392\u5e8f\u7684\u8bdd\u662f0-9\uff1b\u6d88\u8d39\u8005\u7ebf\u7a0b\u6392\u5b8c\u5e8f\u662fC1-0\uff0cC2-0\uff0cC2-1\u3002\u7136\u540e\u7528partitions\u7684\u603b\u6570\u9664\u4ee5\u6d88\u8d39\u8005\u7684\u603b\u6570\u6765\u51b3\u5b9a\u6bcf\u4e2a\u6d88\u8d39\u8005\u7ebf\u7a0b\u6d88\u8d39\u51e0\u4e2a\u5206\u533a\u3002\u5982\u679c\u6709\u4f59\u6570\uff0c\u90a3\u4e48\u524d\u9762\u7684\u51e0\u4e2a\u6d88\u8d39\u8005\u7ebf\u7a0b\u5c06\u4f1a\u591a\u6d88\u8d39\u4e00\u4e2a\u5206\u533a\u3002\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u91cc\u9762\uff0c\u6211\u4eec\u6709\u5341\u4e2a\u5206\u533a\uff0c\u4e09\u4e2a\u6d88\u8d39\u8005\u7ebf\u7a0b\uff0c10\/3=3---1\uff0c\u90a3\u4e48\u6d88\u8d39\u8005\u7ebf\u7a0bC1-0    \u5c06\u4f1a\u591a\u6d88\u8d39\u4e00\u4e2a\u5206\u533a\uff0c\u6240\u4ee5\u6700\u540e\u5206\u533a\u5206\u914d\u7684\u7ed3\u6784\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\uff1a\n\nC1-0\u5c06\u6d88\u8d390,1,2,3\u5206\u533a\n\nC2-0\u5c06\u6d88\u8d394,5,6\u5206\u533a\n\nC2-1\u5c06\u6d88\u8d397,8,9\u5206\u533a<\/code><\/pre>\n<p>\u5982\u679c\u6709\u7b2c\u5341\u4e00\u4e2a\u5206\u533a\u7684\u8bdd\uff0c\u90a3\u4e48\u5206\u533a\u662f\u8fd9\u6837\u7684<\/p>\n<pre><code>C1-0\u5c06\u6d88\u8d390,1,2,3\u5206\u533a\nC2-0\u5c06\u6d88\u8d394,5,6,7\u5206\u533a\n\nC2-1\u5c06\u6d88\u8d398,9,10\u5206\u533a<\/code><\/pre>\n<p>\u5982\u679c\u6211\u4eec\u67092\u4e2a\u4e3b\u9898\uff08T1\u548cT2\uff09\uff0c\u5206\u522b\u90fd\u6709\u5341\u4e2a\u5206\u533a\uff0c\u90a3\u4e48\u6700\u540e\u7684\u5206\u914d\u7ed3\u679c\u662f\uff1a<\/p>\n<pre><code> C1-0\u5c06\u6d88\u8d39T1\u4e3b\u9898\u4e2d\u76840,1,2,3\u5206\u533a\u4ee5\u53caT2\u4e3b\u9898\u4e2d0,1,2,3\u5206\u533a\n\n C2-0\u5c06\u6d88\u8d39T1\u4e3b\u9898\u4e2d\u76844,5,6\u5206\u533a\u4ee5\u53caT2\u4e3b\u9898\u4e2d\u76844,5,6,\u5206\u533a\n\n C2-1\u5c06\u6d88\u8d39T1\u4e3b\u9898\u4e2d\u76847,8,9\u5206\u533a\u4ee5\u53caT2\u4e3b\u9898\u4e2d\u76847,8,9\u5206\u533a<\/code><\/pre>\n<p>\u8fd9\u5c31\u662f\u6d88\u8d39\u7684\u7b56\u7565\u3002 \u5c31\u662f\u7528\u603b\u7684\u5206\u533a\u6570\/\u6d88\u8d39\u8005\u7ebf\u7a0b\u603b\u6570=\u6bcf\u4e2a\u6d88\u8d39\u8005\u7ebf\u7a0b\u5e94\u8be5\u6d88\u8d39\u7684\u5206\u533a\u6570\u3002\u5f53\u8fd8\u6709\u4f59\u6570\u7684\u65f6\u5019\u5c31\u5c06\u4f59\u6570\u5206\u522b\u5206\u53d1\u5230\u53e6\u5916\u7684\u6d88\u8d39\u7ec4\u7ebf\u7a0b\u4e2d\u3002  <\/p>\n<p>\u5728\u8fd9\u91cc\u6211\u4eec\u4e0d\u96be\u770b\u51fa\u6765\u3002C1-0\u6d88\u8d39\u8005\u7ebf\u7a0b\u6bd4\u5176\u4ed6\u6d88\u8d39\u8005\u7ebf\u7a0b\u591a\u6d88\u8d39\u4e86\u4e24\u4e2a\u5206\u533a\uff0c\u8fd9\u5c31\u662fRange Strategy\u7684\u4e00\u4e2a\u660e\u663e\u7684\u5f0a\u7aef\u3002 \u5f53\u5206\u533a\u5f88\u591a\u7684\u65f6\u5019\uff0c\u4f1a\u6709\u4e2a\u522b\u7684\u7ebf\u7a0b\u538b\u529b\u5de8\u5927\uff01<\/p>\n<p><!--more--><\/p>\n<h4>RoundRobin strategy\uff08\u8f6e\u8be2\u7684\u6d88\u8d39\u7b56\u7565\uff09<\/h4>\n<p>\u5728\u4f7f\u7528RoundRobin Strategy\u7684\u65f6\u5019\u6211\u4eec\u5fc5\u987b\u6ee1\u8db3\u4e24\u4e2a\u6761\u4ef6\uff1a<\/p>\n<pre><code>1\u3001\u540c\u4e00\u4e2aconsumer Group\u91cc\u9762\u7684\u6240\u6709\u6d88\u8d39\u8005\u7684num.streams\u5fc5\u987b\u76f8\u7b49\uff1b\n\n2\u3001\u6bcf\u4e2a\u6d88\u8d39\u8005\u8ba2\u9605\u7684\u4e3b\u9898\u5fc5\u987b\u76f8\u540c<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\u6211\u4eec\u5047\u8bbe2\u4e2a\u6d88\u8d39\u8005\u7684num.streams=2.  RoundRobin strategy\u7684\u5de5\u4f5c\u539f\u7406\uff1a \u5c06\u6240\u6709\u4e3b\u9898\u7684\u5206\u533a\u7ec4\u6210TopicAndPartition\u5217\u8868\uff0c\u7136\u540e\u5bf9TopAndPartition\u5217\u8868\u6309\u7167hashcode\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<p>\u6700\u540e\u6309\u7167round-robin\u98ce\u683c\u5c06\u5206\u533a\u5206\u522b\u5206\u914d\u7ed9\u4e0d\u540c\u7684\u6d88\u8d39\u8005\u7ebf\u7a0b\u3002<\/p>\n<p>\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u5047\u5982\u6309\u7167hashcode\u6392\u5e8f\u5b8c\u7684topic-partition\u7ec4\u4f9d\u6b21\u4e3aT1-5,T1-3,T1-0.T1-8.T1-2,T1-1,T1-4,T1-7,T1-6,T1-9\uff0c\u6211\u4eec\u7684\u6d88\u8d39\u8005\u7ebf\u7a0b\u6392\u5e8f\u4e3aC1-0, C1-1 ,C2-0,C2-1\uff0c\u6700\u540e\u5206\u533a\u5206\u914d\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre><code>C1-0\u5c06\u6d88\u8d39T1-5 , T1-2 , T1-6 \u5206\u533a\uff1b\n\nC1-1\u5c06\u6d88\u8d39T1-3 , T1-1 , T1-9 \u5206\u533a\uff1b\nC2-0\u5c06\u6d88\u8d39T1-0 , T1-4\u5206\u533a\uff1b\n\nC2-1\u5c06\u6d88\u8d39T1-8 , T1-7\u5206\u533a\uff1b<\/code><\/pre>\n<p>\u76ee\u524d\u6211\u4eec\u8fd8\u4e0d\u80fd\u81ea\u5b9a\u4e49\u5206\u533a\u5206\u914d\u7b56\u7565\uff0c\u53ea\u80fd\u901a\u8fc7partition.assignment.strategy\u53c2\u6570\u9009\u62e9range\u6216roundrobin\u3002<br \/>\nTDH\u7684partition.assignment.strategy\u53c2\u6570\u9ed8\u8ba4\u7684\u503c\u662fRoundrobin\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u63cf\u8ff0 \u5728kafka\u4e2d\uff0c\u6bcf\u4e2atopic\u4e00\u822c\u4f1a\u6709\u5f88\u591a\u4e2aPartitions\u3002\u4e3a\u4e86\u4f7f\u6211\u4eec\u80fd\u591f\u53ca\u65f6\u7684\u6d88\u8d39\u6d88\u606f\uff0c \u6211 ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=1719\" 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-1719","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\/1719","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=1719"}],"version-history":[{"count":1,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/1719\/revisions"}],"predecessor-version":[{"id":2006,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/1719\/revisions\/2006"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}