{"id":1057,"date":"2022-10-29T21:29:36","date_gmt":"2022-10-29T13:29:36","guid":{"rendered":"http:\/\/viplao.com\/?p=1057"},"modified":"2022-10-29T22:04:23","modified_gmt":"2022-10-29T14:04:23","slug":"%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7-flink-%e8%bf%90%e8%a1%8c%e6%9e%b6%e6%9e%84%e5%ad%a6%e4%b9%a0","status":"publish","type":"post","link":"http:\/\/viplao.com\/index.php\/2022\/10\/29\/%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7-flink-%e8%bf%90%e8%a1%8c%e6%9e%b6%e6%9e%84%e5%ad%a6%e4%b9%a0\/","title":{"rendered":"\u8fd0\u7ef4\u5de5\u5177 &#8211; Flink \u8fd0\u884c\u67b6\u6784\u5b66\u4e60"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u6587\u7ae0\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" 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href=\"http:\/\/viplao.com\/index.php\/2022\/10\/29\/%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7-flink-%e8%bf%90%e8%a1%8c%e6%9e%b6%e6%9e%84%e5%ad%a6%e4%b9%a0\/#2_%E5%B9%B6%E8%A1%8C%E5%BA%A6\" title=\"2. \u5e76\u884c\u5ea6\">2. \u5e76\u884c\u5ea6<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"http:\/\/viplao.com\/index.php\/2022\/10\/29\/%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7-flink-%e8%bf%90%e8%a1%8c%e6%9e%b6%e6%9e%84%e5%ad%a6%e4%b9%a0\/#3_%E7%AE%97%E5%AD%90%E9%93%BE\" title=\"3. \u7b97\u5b50\u94fe\">3. \u7b97\u5b50\u94fe<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"http:\/\/viplao.com\/index.php\/2022\/10\/29\/%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7-flink-%e8%bf%90%e8%a1%8c%e6%9e%b6%e6%9e%84%e5%ad%a6%e4%b9%a0\/#4_%E4%BD%9C%E4%B8%9A%E5%9B%BE%E4%B8%8E%E6%89%A7%E8%A1%8C%E5%9B%BE\" title=\"4. \u4f5c\u4e1a\u56fe\u4e0e\u6267\u884c\u56fe\">4. 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TaskManager \u8fd0\u884c\uff0c\u6bcf\u4e00\u4e2a TaskManager\u90fd\u5305\u542b\u4e86\u4e00\u5b9a\u6570\u91cf\u7684\u63d2\u69fd\uff08slots\uff09\u3002\u63d2\u69fd\u7684\u6570\u91cf\u9650\u5236\u4e86 TaskManager \u80fd\u591f\u6267\u884c\u7684\u4efb\u52a1\u6570\u91cf\u3002\u542f\u52a8\u4e4b\u540e\uff0cTaskManager \u4f1a\u5411\u8d44\u6e90\u7ba1\u7406\u5668\u6ce8\u518c\u5b83\u7684\u63d2\u69fd\uff1b\u6536\u5230\u8d44\u6e90\u7ba1\u7406\u5668\u7684\u6307\u4ee4\u540e\uff0cTaskManager \u5c31\u4f1a\u5c06\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u63d2\u69fd\u63d0\u4f9b\u7ed9 JobManager \u8c03\u7528\u3002JobManager \u5c31\u53ef\u4ee5\u5411\u63d2\u69fd\u5206\u914d\u4efb\u52a1\uff08tasks\uff09\u6765\u6267\u884c\u4e86\u3002\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u4e00\u4e2a TaskManager \u53ef\u4ee5\u8ddf\u5176\u5b83\u8fd0\u884c\u540c\u4e00\u5e94\u7528\u7a0b<\/p>\n\n\n\n<p>\u5e8f\u7684 TaskManager \u4ea4\u6362\u6570\u636e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"slide-4\"><span class=\"ez-toc-section\" id=\"%E5%88%86%E5%8F%91%E5%99%A8%EF%BC%88Dispatcher%EF%BC%89\"><\/span>\u5206\u53d1\u5668\uff08Dispatcher\uff09<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u53ef\u4ee5\u8de8\u4f5c\u4e1a\u8fd0\u884c\uff0c\u5b83\u4e3a\u5e94\u7528\u63d0\u4ea4\u63d0\u4f9b\u4e86 REST \u63a5\u53e3\u3002\u5f53\u4e00\u4e2a\u5e94\u7528\u88ab\u63d0\u4ea4\u6267\u884c\u65f6\uff0c\u5206\u53d1\u5668\u5c31\u4f1a\u542f\u52a8\u5e76\u5c06\u5e94\u7528\u79fb\u4ea4\u7ed9\u4e00\u4e2a JobManager\u3002\u7531\u4e8e\u662f REST \u63a5\u53e3\uff0c\u6240\u4ee5 Dispatcher \u53ef\u4ee5\u4f5c\u4e3a\u96c6\u7fa4\u7684\u4e00\u4e2a HTTP \u63a5\u5165\u70b9\uff0c\u8fd9\u6837\u5c31\u80fd\u591f\u4e0d\u53d7\u9632\u706b\u5899\u963b\u6321\u3002Dispatcher \u4e5f\u4f1a\u542f\u52a8\u4e00\u4e2a Web UI\uff0c\u7528\u6765\u65b9\u4fbf\u5730\u5c55\u793a\u548c\u76d1\u63a7\u4f5c\u4e1a\u6267\u884c\u7684\u4fe1\u606f\u3002Dispatcher \u5728\u67b6\u6784\u4e2d\u53ef\u80fd\u5e76\u4e0d\u662f\u5fc5\u9700\u7684\uff0c\u8fd9\u53d6\u51b3\u4e8e\u5e94\u7528\u63d0\u4ea4\u8fd0\u884c\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"slide-5\"><span class=\"ez-toc-section\" id=\"%E4%BA%8C%E3%80%81Flink%E4%BB%BB%E5%8A%A1%E6%8F%90%E4%BA%A4%E7%9A%84%E6%B5%81%E7%A8%8B\"><\/span>\u4e8c\u3001Flink\u4efb\u52a1\u63d0\u4ea4\u7684\u6d41\u7a0b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4e0a\u9762\u4ecb\u7ecd\u5b8c\u4e86flink\u8fd0\u884c\u65f6\u67b6\u6784\u7684\u5404\u4e2a\u7ec4\u4ef6\u5bf9\u5e94\u7684\u529f\u80fd\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u770b\u4e00\u4e0b\u4ed6\u4eec\u4e92\u76f8\u4e4b\u95f4\u90fd\u662f\u600e\u4e48\u534f\u4f5c\u8fd0\u8f6c\u7684\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"slide-6\"><span class=\"ez-toc-section\" id=\"%E4%B8%80%E8%88%AC%E7%9A%84%E4%BA%A4%E4%BA%92%E5%8D%8F%E4%BD%9C%E5%9B%BE%EF%BC%9A\"><\/span>\u4e00\u822c\u7684\u4ea4\u4e92\u534f\u4f5c\u56fe\uff1a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ucc.alicdn.com\/pic\/developer-ecology\/3a4fb2645344427ead670c4d9d60ae7a.png\" alt=\"111.png\" title=\"111.png\"\/><\/figure>\n\n\n\n<p>\u63d0\u4ea4\u4e00\u4e2aflink\u7a0b\u5e8f\u5230\u5206\u53d1\u5668\uff0c\u5206\u53d1\u5668\uff08Dispatcher\uff09\u5c06\u63d0\u4ea4\u7684\u5e94\u7528\u79fb\u4ea4\u7ed9\u4efb\u52a1\u7ba1\u7406\u5668\uff08JobManager\uff09\uff0c\u7136\u540e\u5411\u8d44\u6e90\u7ba1\u7406\u5668\uff08ResourceManager\uff09\u8bf7\u6c42\u6267\u884c\u4efb\u52a1\u5fc5\u8981\u7684\u8d44\u6e90\uff0c\u63a5\u7740\u8d44\u6e90\u7ba1\u7406\u5668\u4f1a\u5c06\u6709\u7a7a\u95f2\u63d2\u69fd\u7684 TaskManager \u5206\u914d\u7ed9 JobManager\uff0c\u7136\u540eJobManager\u4f1a\u5c06\u8981\u5728\u63d2\u69fd\u4e2d\u6267\u884c\u7684\u4efb\u52a1\u63d0\u4ea4\u7ed9TaskManager \u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"slide-7\"><span class=\"ez-toc-section\" id=\"%E5%85%B7%E4%BD%93%E5%88%B0Yarn%E4%B8%8A%E7%9A%84%E4%BA%A4%E4%BA%92%E5%9B%BE\"><\/span>\u5177\u4f53\u5230Yarn\u4e0a\u7684\u4ea4\u4e92\u56fe<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ucc.alicdn.com\/pic\/developer-ecology\/112b1cd38f244b0f9800db5ea2090767.png\" alt=\"222.png\" title=\"222.png\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220615185748095-619727124.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>Client \u4e3a\u63d0\u4ea4 Job \u7684\u5ba2\u6237\u7aef\uff0c\u53ef\u4ee5\u662f\u8fd0\u884c\u5728\u4efb\u4f55\u673a\u5668\u4e0a\uff08\u4e0e JobManager \u73af\u5883\u8fde\u901a\u5373\u53ef\uff09\u3002\u63d0\u4ea4 Job \u540e\uff0cClient \u53ef\u4ee5\u7ed3\u675f\u8fdb\u7a0b\uff08Streaming \u7684\u4efb\u52a1\uff09\uff0c\u4e5f\u53ef\u4ee5\u4e0d\u7ed3\u675f\u5e76\u7b49\u5f85\u7ed3\u679c\u8fd4\u56de\u3002<\/p>\n\n\n\n<p>JobManager \u4e3b \u8981 \u8d1f \u8d23 \u8c03 \u5ea6 Job \u5e76 \u534f \u8c03 Task \u505a checkpoint\uff0c \u804c \u8d23 \u4e0a \u5f88 \u50cfStorm \u7684 Nimbus\u3002\u4ece Client \u5904\u63a5\u6536\u5230 Job \u548c JAR \u5305\u7b49\u8d44\u6e90\u540e\uff0c\u4f1a\u751f\u6210\u4f18\u5316\u540e\u7684\u6267\u884c\u8ba1\u5212\uff0c\u5e76\u4ee5 Task \u7684\u5355\u5143\u8c03\u5ea6\u5230\u5404\u4e2a TaskManager \u53bb\u6267\u884c\u3002<\/p>\n\n\n\n<p>TaskManager \u5728\u542f\u52a8\u7684\u65f6\u5019\u5c31\u8bbe\u7f6e\u597d\u4e86\u69fd\u4f4d\u6570\uff08Slot\uff09\uff0c\u6bcf\u4e2a slot \u80fd\u542f\u52a8\u4e00\u4e2aTask\uff0cTask \u4e3a\u7ebf\u7a0b\u3002\u4ece JobManager \u5904\u63a5\u6536\u9700\u8981\u90e8\u7f72\u7684 Task\uff0c\u90e8\u7f72\u542f\u52a8\u540e\uff0c\u4e0e\u81ea\u5df1\u7684\u4e0a\u6e38\u5efa\u7acb Netty \u8fde\u63a5\uff0c\u63a5\u6536\u6570\u636e\u5e76\u5904\u7406<\/p>\n\n\n\n<p>(1)\u5ba2\u6237\u7aefAPP\u901a\u8fc7\u5206\u53d1\u5668\u63d0\u4f9bREST \u63a5\u53e3\uff0c\u5c06\u4f5c\u4e1a\u63d0\u4ea4\u7ed9JobManager<\/p>\n\n\n\n<p>(2)\u5206\u53d1\u5668\u542f\u52a8JobMaster\uff0c \u5c06\u4f5c\u4e1a(\u5305\u542bJobGraph)\u63d0\u4ea4\u7ed9JobMaster<\/p>\n\n\n\n<p>(3)JobMaster \u5c06JobGraph \u89e3\u6790\u4e3aExecutionGraph\uff0c\u5f97\u5230\u6240\u9700\u7684\u8d44\u6e90\u6570\u91cf\uff0c\u7136\u540e\u5411\u8d44\u6e90\u7ba1\u7406\u5668\u8bf7\u6c42\u8d44\u6e90(slots)<\/p>\n\n\n\n<p>(4)\u8d44\u6e90\u7ba1\u7406\u5668\u534f\u8c03\u8d44\u6e90<\/p>\n\n\n\n<p>(5)Taskmanager \u542f\u52a8\u53ea\u4f1a\u5411ResourceManager \u6ce8\u518c\u81ea\u5df1\u7684\u53ef\u4ee5slots<\/p>\n\n\n\n<p>(6)\u8d44\u6e90\u7ba1\u7406\u5668\u901a\u77e5TaskManager \u4e3a\u65b0\u7684\u4f5c\u4e1a\u63d0\u4f9bslots<\/p>\n\n\n\n<p>(7)TaskManager\u8fde\u63a5\u5230\u5bf9\u5e94\u7684JobMaster\uff0c\u63d0\u4f9bslots<\/p>\n\n\n\n<p>(8)JobMaster \u5c06\u9700\u8981\u6267\u884c\u7684\u4efb\u52a1\u5206\u53d1\u7ed9TaskManager<\/p>\n\n\n\n<p>(9)TaskManager \u6267\u884c\u4efb\u52a1\uff0c\u4e92\u76f8\u4e4b\u95f4\u53ef\u4ee5\u4ea4\u6362<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"slide-8\"><span class=\"ez-toc-section\" id=\"%E4%B8%89%E3%80%81Flink%E4%BB%BB%E5%8A%A1%E8%B0%83%E5%BA%A6%E5%8E%9F%E7%90%86\"><\/span>\u4e09\u3001Flink\u4efb\u52a1\u8c03\u5ea6\u539f\u7406<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ucc.alicdn.com\/pic\/developer-ecology\/309aeba5ac2b444fa79c57ea071f9528.png\" alt=\"333.png\" title=\"333.png\"\/><\/figure>\n\n\n\n<p>Flink \u96c6 \u7fa4 \u542f \u52a8 \u540e \uff0c \u9996 \u5148 \u4f1a \u542f \u52a8 \u4e00 \u4e2a JobManger \u548c\u4e00\u4e2a\u6216\u591a\u4e2a\u7684TaskManager\u3002\u7531 Client \u63d0\u4ea4\u4efb\u52a1\u7ed9 JobManager\uff0cJobManager \u518d\u8c03\u5ea6\u4efb\u52a1\u5230\u5404\u4e2aTaskManager \u53bb\u6267\u884c\uff0c\u7136\u540e TaskManager \u5c06\u5fc3\u8df3\u548c\u7edf\u8ba1\u4fe1\u606f\u6c47\u62a5\u7ed9 JobManager\u3002TaskManager \u4e4b\u95f4\u4ee5\u6d41\u7684\u5f62\u5f0f\u8fdb\u884c\u6570\u636e\u7684\u4f20\u8f93\u3002\u4e0a\u8ff0\u4e09\u8005\u5747\u4e3a\u72ec\u7acb\u7684 JVM \u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p>TaskManger \u4e0e Slots<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ucc.alicdn.com\/pic\/developer-ecology\/2759c9fbe30f49ddbc19c61682e9a23b.png\" alt=\"444.png\" title=\"444.png\"\/><\/figure>\n\n\n\n<p>\u4e00\u4e2a Worker\uff08TaskManager\uff09\u5c31\u662f\u4e00\u4e2a JVM \u8fdb\u7a0b\uff0c\u5185\u90e8\u62e5\u6709\u4e00\u4e2a\u6216\u591a\u4e2a Task Slot \u8fdb\u4e00\u6b65\u7ec6\u5206\u8fdb\u7a0b\u7684 CPU \u8d44\u6e90\u3002<\/p>\n\n\n\n<p>Slot \u662f\u6307 TaskManager \u6700\u5927\u80fd\u5e76\u53d1\u6267\u884c\u7684\u80fd\u529b-&gt;taskmanager.numberOfTaskSlots-&gt;ys<\/p>\n\n\n\n<p>parallelism \u662f\u6307 TaskManager \u5b9e\u9645\u4f7f\u7528\u7684\u5e76\u53d1\u80fd\u529b-&gt;parallelism.default-&gt;p<\/p>\n\n\n\n<p>\u540c\u4e00Slot \u4e2d\u7684\u7ebf\u7a0b\u5171\u4eab\u76f8\u540c\u7684 JVM\u3002 \u540c\u4e00 JVM \u4e2d\u7684\u4efb\u52a1\u5171\u4eab TCP \u8fde\u63a5\u548c\u5fc3\u8df3\u6d88\u606f\u3002TaskManager \u7684\u4e00\u4e2a Slot \u4ee3\u8868\u4e00\u4e2a\u53ef\u7528\u7ebf\u7a0b\uff0c\u8be5\u7ebf\u7a0b\u5177\u6709\u56fa\u5b9a\u7684\u5185\u5b58\uff0c\u6ce8\u610f Slot \u53ea\u5bf9\u5185\u5b58\u9694\u79bb\uff0c\u6ca1\u6709\u5bf9 CPU \u9694\u79bb<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ucc.alicdn.com\/pic\/developer-ecology\/581e7e03cf974fefbfb8ad3a49ce5c76.png\" alt=\"555.png\" title=\"555.png\"\/><\/figure>\n\n\n\n<p>\u5047\u8bbe\u4e00\u5171\u6709 3 \u4e2a TaskManager\uff0c\u6bcf\u4e00\u4e2a TaskManager \u4e2d\u7684\u5206\u914d 3 \u4e2aTaskSlot\uff0c\u4e5f\u5c31\u662f\u6bcf\u4e2a TaskManager \u53ef\u4ee5\u63a5\u6536 3 \u4e2a task\uff0c\u4e00\u5171 9 \u4e2a TaskSlot\uff0c\u5982\u679c\u6211\u4eec\u8bbe\u7f6e parallelism.default=1\uff0c\u5373\u8fd0\u884c\u7a0b\u5e8f\u9ed8\u8ba4\u7684\u5e76\u884c\u5ea6\u4e3a 1\uff0c9 \u4e2a TaskSlot \u53ea\u7528\u4e86 1\u4e2a\uff0c\u6709 8 \u4e2a\u7a7a\u95f2\uff0c\u56e0\u6b64\uff0c\u8bbe\u7f6e\u5408\u9002\u7684\u5e76\u884c\u5ea6\u624d\u80fd\u63d0\u9ad8\u6548\u7387<\/p>\n\n\n\n<p>\u7a0b\u5e8f\u4e0e\u6570\u636e\u6d41\uff08DataFlow\uff09<\/p>\n\n\n\n<p>\u6240\u6709\u7684 Flink \u7a0b\u5e8f\u90fd\u662f\u7531\u4e09\u90e8\u5206\u7ec4\u6210\u7684\uff1a Source \u3001Transformation \u548c Sink\u3002Source \u8d1f\u8d23\u8bfb\u53d6\u6570\u636e\u6e90\uff0cTransformation \u5229\u7528\u5404\u79cd\u7b97\u5b50\u8fdb\u884c\u5904\u7406\u52a0\u5de5\uff0cSink \u8d1f\u8d23\u8f93\u51fa\u3002<\/p>\n\n\n\n<p>Flink \u4e0a\u8fd0\u884c\u7684\u7a0b\u5e8f\u4f1a\u88ab\u6620\u5c04\u6210\u201c\u903b\u8f91\u6570\u636e\u6d41\u201d\uff08dataflows\uff09\uff0c\u5b83\u5305\u542b\u4e86\u8fd9\u4e09\u90e8\u5206\u3002\u6bcf\u4e00\u4e2a dataflow \u4ee5\u4e00\u4e2a\u6216\u591a\u4e2a sources \u5f00\u59cb\u4ee5\u4e00\u4e2a\u6216\u591a\u4e2a sinks \u7ed3\u675f\u3002dataflow \u7c7b\u4f3c\u4e8e\u4efb\u610f\u7684\u6709\u5411\u65e0\u73af\u56fe\uff08DAG\uff09\u3002<\/p>\n\n\n\n<p>\u7a0b\u5e8f\u4e2d\u7684\u8f6c\u6362\u8fd0\u7b97\uff08transformations\uff09\u8ddf dataflow \u4e2d\u7684\uff08operator\uff09\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\u5173\u7cfb\uff0c\u4f46\u6709\u65f6\u5019\uff0c\u4e00\u4e2a transformation \u53ef\u80fd\u5bf9\u5e94\u591a\u4e2a operator\u3002<\/p>\n\n\n\n<p>\u5e76\u884c\u5ea6\uff08Parallelism\uff09<\/p>\n\n\n\n<p>Flink \u7a0b\u5e8f\u7684\u6267\u884c\u5177\u6709\u5e76\u884c\u3001\u5206\u5e03\u5f0f\u7684\u7279\u6027\u3002\u4e00\u4e2a\u7279\u5b9a\u7b97\u5b50\u7684\u5b50\u4efb\u52a1\uff08subtask\uff09\u7684\u4e2a\u6570\u88ab\u79f0\u4e4b\u4e3a\u5176\u5e76\u884c\u5ea6\uff08parallelism\uff09\u3002\u4e00\u4e2a\u6d41\u7a0b\u5e8f\u7684\u5e76\u884c\u5ea6\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u5c31\u662f\u5176\u6240\u6709\u7b97\u5b50\u4e2d\u6700\u5927\u7684\u5e76\u884c\u5ea6\u3002\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\uff0c\u4e0d\u540c\u7684\u7b97\u5b50\u53ef\u80fd\u5177\u6709\u4e0d\u540c\u7684\u5e76\u884c\u5ea6\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ucc.alicdn.com\/pic\/developer-ecology\/2518626125434ac6ac984662abfce02c.png\" alt=\"666.png\" title=\"666.png\"\/><\/figure>\n\n\n\n<p>Stream \u5728\u7b97\u5b50\u4e4b\u95f4\u4f20\u8f93\u6570\u636e\u7684\u5f62\u5f0f\u6709\u4e24\u79cd\u6a21\u5f0f\u3002<\/p>\n\n\n\n<p>One-to-one\uff1astream(\u6bd4\u5982\u5728 source \u548c map operator \u4e4b\u95f4)\u7ef4\u62a4\u7740\u5206\u533a\u4ee5\u53ca\u5143\u7d20\u7684\u987a\u5e8f\u3002\u90a3\u610f\u5473\u7740 map \u7b97\u5b50\u7684\u5b50\u4efb\u52a1\u770b\u5230\u7684\u5143\u7d20\u7684\u4e2a\u6570\u4ee5\u53ca\u987a\u5e8f\u8ddf source \u7b97\u5b50\u7684\u5b50\u4efb\u52a1\u751f\u4ea7\u7684\u5143\u7d20\u7684\u4e2a\u6570\u3001\u987a\u5e8f\u76f8\u540c\uff0cmap\u3001fliter\u3001flatMap \u7b49\u7b97\u5b50\u90fd\u662f one-to-one \u7684\u5bf9\u5e94\u5173\u7cfb\u3002<\/p>\n\n\n\n<p>Redistributing\uff1astream(map()\u8ddf keyBy\/window \u4e4b\u95f4\u6216\u8005 keyBy\/window \u8ddf sink\u4e4b\u95f4)\u7684\u5206\u533a\u4f1a\u53d1\u751f\u6539\u53d8\u3002\u6bcf\u4e00\u4e2a\u7b97\u5b50\u7684\u5b50\u4efb\u52a1\u4f9d\u636e\u6240\u9009\u62e9\u7684 transformation \u53d1\u9001\u6570\u636e\u5230\u4e0d\u540c\u7684\u76ee\u6807\u4efb\u52a1\u3002\u4f8b\u5982\uff0ckeyBy() \u57fa\u4e8e hashCode \u91cd\u5206\u533a\u3001broadcast \u548c rebalance\u4f1a\u968f\u673a\u91cd\u65b0\u5206\u533a\uff0c\u8fd9\u4e9b\u7b97\u5b50\u90fd\u4f1a\u5f15\u8d77 redistribute \u8fc7\u7a0b<\/p>\n\n\n\n<p>\u4efb\u52a1\u94fe\uff08Operator Chains\uff09<\/p>\n\n\n\n<p>\u76f8\u540c\u5e76\u884c\u5ea6\u7684 one to one \u64cd\u4f5c\uff0cFlink \u8fd9\u6837\u76f8\u8fde\u7684\u7b97\u5b50\u94fe\u63a5\u5728\u4e00\u8d77\u5f62\u6210\u4e00\u4e2a task\uff0c\u539f\u6765\u7684\u7b97\u5b50\u6210\u4e3a\u91cc\u9762\u7684\u4e00\u90e8\u5206\u3002\u5c06\u7b97\u5b50\u94fe\u63a5\u6210 task \u662f\u975e\u5e38\u6709\u6548\u7684\u4f18\u5316\uff1a\u5b83\u80fd\u51cf\u5c11\u7ebf\u7a0b\u4e4b\u95f4\u7684\u5207\u6362\u548c\u57fa\u4e8e\u7f13\u5b58\u533a\u7684\u6570\u636e\u4ea4\u6362\uff0c\u5728\u51cf\u5c11\u65f6\u5ef6\u7684\u540c\u65f6\u63d0\u5347\u541e\u5410\u91cf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/ucc.alicdn.com\/pic\/developer-ecology\/bd1b24bc2c2847e9a8d24cdfeb071dd0.png\" alt=\"777.png\" title=\"777.png\"\/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%9B%B4%E5%85%B7%E4%BD%93%E5%AE%9E%E8%B7%B5_%E3%80%82%E3%80%82%E3%80%82\"><\/span>\u66f4\u5177\u4f53\u5b9e\u8df5 \u3002\u3002\u3002<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>1\u300b\u600e\u6837\u4eceFlink\u7a0b\u5e8f\u5f97\u5230\u4efb\u52a1?<\/p>\n\n\n\n<p>2\u300b\u4e00\u4e2a\u6d41\u5904\u7406\u7a0b\u5e8f\uff0c\u5230\u5e95\u5305\u542b\u591a\u5c11\u4e2a\u4efb\u52a1?<\/p>\n\n\n\n<p>3\u300b\u6700\u7ec8\u6267\u884c\u4efb\u52a1\uff0c\u9700\u8981\u5360\u7528\u591a\u5c11slot?<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1%E6%95%B0%E6%8D%AE%E6%B5%81%E5%9B%BEDataflow_Graph\"><\/span>1.\u6570\u636e\u6d41\u56fe(Dataflow Graph)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u3000\u3000Flink \u662f\u6d41\u5f0f\u8ba1\u7b97\u6846\u67b6\uff0c\u5b83\u7684\u7a0b\u5e8f\u7ed3\u6784\u5176\u5b9e\u5c31\u662f\u5b9a\u4e49\u4e86\u4e00\u8fde\u4e32\u7684\u64cd\u4f5c\uff0c\u6bcf\u4e2a\u6570\u636e\u8f93\u5165\u4e4b\u540e\u90fd\u4f1a\u8c03\u7528\u6bcf\u4e00\u4e2a\u6b65\u9aa4\u4e00\u6b21\u8ba1\u7b97\uff0c\u6bcf\u4e00\u4e2a\u64cd\u4f5c\u90fd\u53eb\u505a&#8221;\u7b97\u5b50&#8221;(operator)\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u6211\u4eec\u7684\u7a0b\u5e8f\u662f\u4e00\u4e32\u7b97\u5b50\u6784\u6210\u7684\u7ba1\u9053\uff0c\u6570\u636e\u5219\u50cf\u6c34\u6d41\u4e00\u6837\u6709\u5e8f\u5730\u6d41\u8fc7\u3002&nbsp;<\/p>\n\n\n\n<p>\u3000\u3000\u6240\u6709\u7684\u7a0b\u5e8f\u90fd\u7531\u4e09\u90e8\u5206\u7ec4\u6210\u3002source(\u6e90\u7b97\u5b50\uff0c\u8d1f\u8d23\u8bfb\u53d6\u6570\u636e)\u3001Transformation(\u8f6c\u6362\u7b97\u5b50\uff0c\u8d1f\u8d23\u5904\u7406\u6570\u636e)\u3001Sink(\u4e0b\u6c89\u5b50\u7b97\u5b50\uff0c\u8d1f\u8d23\u6570\u636e\u7684\u8f93\u51fa)\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u8fd0\u884c\u65f6\uff0cFlink \u7a0b\u5e8f\u4f1a\u88ab\u6620\u5c04\u6210\u6240\u6709\u7b97\u5b50\u6309\u7167\u903b\u8f91\u987a\u5e8f\u62fc\u63a5\u6210\u4e00\u5f20\u56fe\uff0c\u8fd9\u79cd\u56fe\u88ab\u79f0\u4e3a\u903b\u8f91\u6570\u636e\u6d41(\u6570\u636e\u6d41\u56fe)\u3002\u6570\u636e\u6d41\u56fe\u7c7b\u4f3c\u4e8e\u4efb\u610f\u7684\u6709\u5411\u65e0\u73af\u56fe(DAG-Directed Acyclic Graph)\u3002\u56fe\u4e2d\u7684\u6bcf\u4e00\u6761\u6570\u636e\u6d41\u4ee5\u4e00\u4e2a\u6216\u8005\u591a\u4e2asource \u5f00\u59cb\uff0c\u4ee5\u4e00\u4e2a\u6216\u8005\u591a\u4e2asink \u7ed3\u675f\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ee3\u7801\u4e2d\uff0c\u9664\u4e86source\u548csink\uff0c\u5176\u4ed6\u53ef\u4ee5\u88ab\u79f0\u4e3a\u4ee3\u7801\u4e2d\u5982\u679c\u8fd4\u56de\u503c\u662f&nbsp;SingleOutputStreamOperator \u7684API \u5c31\u53ef\u4ee5\u79f0\u4e3a\u4e00\u4e2a\u7b97\u5b50\uff0c\u5426\u5219\u4e0d\u4f1a\u8ba1\u7b97\u4e3a\u7b97\u5b50(\u53ea\u80fd\u7406\u89e3\u4e3a\u4e2d\u95f4\u7684\u8f6c\u6362\u64cd\u4f5c)\uff0c\u6bd4\u5982\uff1akeyBy \u8fd4\u56de\u503c\u662f KeyedStream \u5c31\u4e0d\u662f\u4e00\u4e2a\u7b97\u5b50\uff1borg.apache.flink.streaming.api.datastream.KeyedStream#sum(int) \u5c31\u662f\u4e00\u4e2a\u7b97\u5b50\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5e38\u89c1\u7684\u7b97\u5b50\uff1a<\/p>\n\n\n\n<p>source\uff1a\u8bfbtxt\u3001socket\u3001\u81ea\u5b9a\u4e49\u8f93\u5165\u7b49<\/p>\n\n\n\n<p>transformation\uff1aflatMap\u3001map\u3001filter\u3001process \u5904\u7406\u64cd\u4f5c\uff0c\u8fd8\u6709sum\u3001max\u3001maxBy\u3001min\u3001minBy \u7b49\u4e5f\u90fd\u662f\u805a\u5408\u7b97\u5b50(\u540d\u5b57\u90fd\u662fKeyed Aggregation)<\/p>\n\n\n\n<p>sink: print\u3001printToErr\u3001writeAsText\u3001writeAsCsv \u7b49<\/p>\n\n\n\n<p>org.apache.flink.streaming.api.datastream.DataStream \u6e90\u7801\u53ef\u4ee5\u770b\u51fa\u6bcf\u4e2a\u7b97\u5b50\u90fd\u6709\u4e00\u4e2a\u7279\u5b9a\u540d\u79f0\uff1a<\/p>\n\n\n\n<p><img decoding=\"async\" src=\"https:\/\/images.cnblogs.com\/OutliningIndicators\/ContractedBlock.gif\">&nbsp;View Code<\/p>\n\n\n\n<p>org.apache.flink.streaming.api.datastream.KeyedStream \u9488\u5bf9\u96c6\u5408\u7684\u7b97\u5b50API\uff1a<\/p>\n\n\n\n<p><img decoding=\"async\" src=\"https:\/\/images.cnblogs.com\/OutliningIndicators\/ContractedBlock.gif\">&nbsp;View Code<\/p>\n\n\n\n<p>\u6bd4\u5982\u4e4b\u524d\u7684socket \u4f8b\u5b50\uff1ashow plan \u663e\u793a\u51e0\u4e2a\u6846\u53ef\u4ee5\u7406\u89e3\u4e3a\u51e0\u4e2a\u4efb\u52a1(\u4e00\u4e2a\u4efb\u52a1\u53ef\u80fd\u6709\u591a\u4e2a\u5b50\u4efb\u52a1\uff0c\u5b50\u4efb\u52a1\u7684\u6570\u91cf\u53ef\u4ee5\u7406\u89e3\u4e3a\u5e76\u884c\u5ea6)\uff0c\u4e24\u8005\u4e3a\u4ec0\u4e48\u4f1a\u8fd9\u4e48\u5408\u5e76\u5728\u4e86\u89e3\u5408\u5e76\u7b97\u5b50\u94fe(\u5e76\u884c\u5ea6\u76f8\u540c\u7684\u4e00\u5bf9\u4e00\u7b97\u5b50\u4f1a\u5408\u5e76\u7b97\u5b50\u94fe)\u540e\u5c31\u4f1a\u660e\u767d\u3002<\/p>\n\n\n\n<p>(1) \u5e76\u884c\u5ea6\u8bbe\u7f6e\u4e3a2\u7684\u65f6\u5019show plan \u8ba1\u5212\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620121525113-107813880.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;(2)\u5e76\u884c\u5ea6\u8bbe\u7f6e\u4e3a1 \u7684\u65f6\u5019show plan \u5982\u4e0b<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620121715633-745220360.png\" alt=\"\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%E5%B9%B6%E8%A1%8C%E5%BA%A6\"><\/span>2. \u5e76\u884c\u5ea6<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>1.&nbsp;\u4ec0\u4e48\u662f\u5e76\u884c\u8ba1\u7b97<\/p>\n\n\n\n<p>\u3000\u3000\u53ef\u4ee5\u7406\u89e3\u4e3a\uff0c\u6211\u4eec\u671f\u671b\u7684\u662f\u201c\u6570\u636e\u5e76\u884c\u201d\u3002\u4e5f\u5c31\u662f\u591a\u6761\u6570\u636e\u540c\u65f6\u5230\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u540c\u65f6\u8bfb\u5165\uff0c\u5e76\u4e14\u5728\u4e0d\u540c\u7684\u8282\u70b9\u8fdb\u884cflatMap \u7b49\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>2. \u5e76\u884c\u5b50\u4efb\u52a1\u548c\u5e76\u884c\u5ea6<\/p>\n\n\n\n<p>\u3000\u3000\u4e3a\u4e86\u5b9e\u73b0\u5e76\u884c\u64cd\u4f5c\uff0c\u6211\u4eec\u628a\u4e00\u4e2a\u7b97\u5b50\u64cd\u4f5c\uff0c\u590d\u5236\u591a\u5206\u5230\u591a\u4e2a\u8282\u70b9\uff0c\u6570\u636e\u6765\u4e86\u4e4b\u540e\u5230\u5176\u4e2d\u4efb\u610f\u4e00\u4e2a\u6267\u884c\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u4e00\u4e2a\u7b97\u5b50\u4efb\u52a1\u5c31\u88ab\u62c6\u5206\u6210\u4e86\u591a\u4e2a\u5e76\u884c\u7684\u5b50\u4efb\u52a1\uff0c\u518d\u5c06\u4ed6\u4eec\u5206\u53d1\u5230\u4e0d\u540c\u8282\u70b9\uff0c\u5c31\u5b9e\u73b0\u4e86\u771f\u6b63\u7684\u5e76\u884c\u8ba1\u7b97\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728Flink \u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u4e2a\u7b97\u5b50(operator)\u53ef\u4ee5\u5305\u542b\u4e00\u4e2a\u6216\u591a\u4e2a\u5b50\u4efb\u52a1\uff0c\u8fd9\u4e9b\u5b50\u4efb\u52a1\u5728\u4e0d\u540c\u7684\u7ebf\u7a0b\u3001\u7269\u7406\u673a\u6216\u8005\u5bb9\u5668\u4e2d\u5b8c\u5168\u72ec\u7acb\u5730\u6267\u884c\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4e00\u4e2a\u7279\u5b9a\u7b97\u5b50\u7684\u5b50\u4efb\u52a1\u7684\u4e2a\u6570\u88ab=\u79f0\u4e4b\u4e3a\u5e76\u884c\u5ea6(parallelism)\u3002\u4e00\u4e2a\u6d41\u7a0b\u5e8f\u7684\u5e76\u884c\u5ea6\u53ef\u4ee5\u8ba4\u4e3a\u662f\u5176\u6240\u6709\u7b97\u5b50\u4e2d\u6700\u5927\u7684\u5e76\u884c\u5ea6\u3002\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\u4e0d\u540c\u7684\u7b97\u5b50\u53ef\u80fd\u5177\u6709\u4e0d\u540c\u7684\u5e76\u884c\u5ea6\u3002<\/p>\n\n\n\n<p>\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620161828132-851763935.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u3000\u3000\u5f53\u524d\u6570\u636e\u6d41\u4e2d\u6709source\u3001map\u3001window\u3001sink \u56db\u4e2a\u7b97\u5b50\uff0c\u9664\u6700\u540esink\u5916\u5176\u4ed6\u7684\u7b97\u5b50\u7684\u5e76\u884c\u5ea6\u90fd\u4e3a2.\u6574\u4e2a\u7a0b\u5e8f\u5305\u542b7\u4e2a\u5b50\u4efb\u52a1\uff0c\u81f3\u5c11\u9700\u8981\u4e24\u4e2a\u5206\u533a\u6765\u6267\u884c\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u8fd9\u6bb5\u7a0b\u5e8f\u7684\u5e76\u884c\u5ea6\u5c31\u662f2\u3002<\/p>\n\n\n\n<p>3. \u5e76\u884c\u5ea6\u8bbe\u7f6e<\/p>\n\n\n\n<p>\u8bbe\u7f6e\u6309\u7167\u6700\u8fd1\u539f\u5219\uff0c\u6700\u5148\u8bbe\u7f6e\u7684\u4f18\u5148\u751f\u6548\u3002<\/p>\n\n\n\n<p>(1)\u4ee3\u7801\u4e2d\u8bbe\u7f6e<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ \u5168\u5c40\u8bbe\u7f6e\nexecutionEnvironment.setParallelism(3);\n\n\/\/ \u5bf9\u5355\u4e2a\u7b97\u5b50\u8bbe\u7f6e\ntxtDataSource\n                .flatMap((String line, Collector&lt;String&gt; words) -&gt; {\n                    Arrays.stream(line.split(\" \")).forEach(words::collect);\n                }).setParallelism(3)<\/pre>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<p>&nbsp;(2\uff09\u63d0\u4ea4\u65f6\u8bbe\u7f6e(webui\u4e5f\u53ef\u4ee5\u8bbe\u7f6e)<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">.\/flink-1.13.0\/bin\/flink run -c cn.qz.SocketStreamWordCount -p 2 .\/study-flink-1.0-SNAPSHOT.jar<\/pre>\n\n\n\n<p>(3) \u5728\u96c6\u7fa4\u7684\u914d\u7f6e\u6587\u4ef6 flink-conf.yaml \u4e2d\u76f4\u63a5\u66f4\u6539\u9ed8\u8ba4\u5e76\u884c\u5ea6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">parallelism.default: 1<\/pre>\n\n\n\n<p>\u3000\u3000\u8fd9\u4e9b\u53c2\u6570\u90fd\u4e0d\u662f\u5fc5\u987b\u7684\uff0c\u4f1a\u6309\u7167\u7531\u8fd1\u5230\u8fdc\u7684\u539f\u5219\u5339\u914d(\u5355\u4e2a\u8bbe\u7f6e&lt;env&lt;-p&lt;\u9ed8\u8ba4)\u3002\u9700\u8981\u6ce8\u610f\uff0c\u6709\u7684\u7b97\u5b50\u5373\u4f7f\u8bbe\u7f6e\u4e86\u5e76\u884c\u5ea6\u4e5f\u4e0d\u4f1a\u751f\u6548\uff0c\u6bd4\u5982\u8bfb\u53d6socket \u6587\u672c\u6d41\u7684\u7b97\u5b50\u672c\u8eab\u5c31\u4e0d\u652f\u6301\u5e76\u884c\u3002\u5728\u5f00\u53d1\u73af\u5883\u4e2d\uff0c\u9ed8\u8ba4\u7684\u5e76\u884c\u5ea6\u4e3a\u5f53\u524d\u673a\u5668\u7684CPU\u6838\u6570(\u9ed8\u8ba4\u7684\u4efb\u52a1\u69fd\u7684\u6570\u91cf\u4e5f\u662fCPU\u6838\u6570)\u3002<\/p>\n\n\n\n<p>&nbsp;4. \u6d4b\u8bd5\u4f8b\u5b50<\/p>\n\n\n\n<p>\u3000\u3000\u8fd8\u662f\u4ee5socket \u6d41\u4e3a\u4f8b\u5b50\u3002<\/p>\n\n\n\n<p>(1) \u63d0\u4ea4\u65f6\u9009\u62e9\u5e76\u884c\u5ea6\u4e3a2\uff0c \u67e5\u770b\u4efb\u52a1\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620162140681-1334299383.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;\u3000\u3000\u5982\u4e0a\u3002 name \u662f\u6bcf\u4e2a\u7b97\u5b50\u7684\u540d\u79f0\uff0c\u6211\u4eec\u5728\u6e90\u7801\u4e2d\u53ef\u4ee5\u770b\u5230\u4e3a\u8fd9\u4e9b\u7b97\u5b50\u8d77\u7684\u540d\u79f0\u3002 \u540e\u9762\u6709\u5b50\u4efb\u52a1\u7684\u6570\u91cf\u3002<\/p>\n\n\n\n<p>(2) 7777 \u7aef\u53e3\u8f93\u5165<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@k8smaster01 conf]# nc -l 7777\nhello china and beijing\nwhat is your name?\nmy name is qz.<\/pre>\n\n\n\n<p>(3) \u67e5\u770b\u8f93\u51fa\u4efb\u52a1\u7684\u8be6\u7ec6\u4fe1\u606f<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620162543100-337542739.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;\u67e5\u770b\u5b50\u4efb\u52a1\u4fe1\u606f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620162605235-773518870.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;(4) \u67e5\u770b\u4e24\u4e2a\u5b50\u4efb\u52a1\u6240\u5728\u673a\u5668\u7684\u6807\u51c6\u8f93\u51fa\uff1a \u53ef\u4ee5\u770b\u51fa\u8f93\u51fa\u524d\u9762\u52a0\u7684\u5e8f\u53f7(\u53ef\u4ee5\u7406\u89e3\u4e3a\u5206\u533a\u5e8f\u53f7\u3001\u4efb\u52a1\u63d2\u69fd\u53f7)<\/p>\n\n\n\n<p>\u7b2c\u4e00\u4e2a\u5b50\u4efb\u52a1\u6240\u5728\u673a\u5668\u8f93\u51fa\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620162702670-1371388209.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;\u7b2c\u4e8c\u4e2a\u673a\u5668\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620162800999-915144889.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;\u3000\u3000\u8fd9\u91cc\u81ea\u5df1\u7406\u89e3\u6700\u5927\u5e76\u884c\u5ea6\u5c31\u662f\u4e00\u4e2a\u4efb\u52a1\u6700\u591a\u80fd\u5206\u5230\u51e0\u4e2a\u8d44\u6e90(\u4efb\u52a1\u69fd)\uff0c\u4efb\u52a1\u4f1a\u540c\u65f6\u5e76\u884c\u5904\u7406\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u5728\u4e0d\u540c\u7684\u673a\u5668\u76f4\u63a5\u5e76\u884c\u5904\u7406(\u81f3\u4e8e\u6bcf\u4e2a\u673a\u5668\u5e76\u884c\u51e0\u4e2a\u7ebf\u7a0b\u8dd1\uff0c\u540e\u9762\u4efb\u52a1\u69fd\u8fdb\u884c\u7814\u7a76\uff0c\u76ee\u524d\u662f\u6bcf\u4e2a\u673a\u5668\u4e00\u4e2a\u4efb\u52a1\u69fd)\u3002<\/p>\n\n\n\n<p>\u8865\u5145\uff1a \u9488\u5bf91\u30012 \u8fdb\u884c\u7684\u6d4b\u8bd5<\/p>\n\n\n\n<p>\u3000\u3000\u6bd4\u5982\u5982\u4e0b\u7a0b\u5e8f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-preformatted\">package cn.qz;\n\nimport org.apache.flink.api.common.typeinfo.Types;\nimport org.apache.flink.api.java.tuple.Tuple2;\nimport org.apache.flink.streaming.api.datastream.DataStreamSource;\nimport org.apache.flink.streaming.api.datastream.KeyedStream;\nimport org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;\nimport org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;\nimport org.apache.flink.util.Collector;\n\nimport java.util.Arrays;\n\npublic class SocketStreamWordCount {\n\n    public static void main(String[] args) throws Exception {\n        \/\/ 1. \u521b\u5efa\u6267\u884c\u73af\u5883(\u6d41\u5904\u7406\u6267\u884c\u73af\u5883)\n        StreamExecutionEnvironment executionEnvironment = StreamExecutionEnvironment.getExecutionEnvironment();\n        \/\/ 2. \u8bfb\u53d6\u6587\u4ef6\n        DataStreamSource&lt;String&gt; txtDataSource = executionEnvironment.socketTextStream(\"192.168.13.107\", 7777);\n        \/\/ 3. \u8f6c\u6362\u6570\u636e\u683c\u5f0f\n        SingleOutputStreamOperator&lt;Tuple2&lt;String, Long&gt;&gt; singleOutputStreamOperator = txtDataSource\n                .flatMap((String line, Collector&lt;String&gt; words) -&gt; {\n                    Arrays.stream(line.split(\" \")).forEach(words::collect);\n                })\n                .returns(Types.STRING)\n                .map(word -&gt; Tuple2.of(word, 1L))\n                .returns(Types.TUPLE(Types.STRING, Types.LONG));\/\/ lambda \u4f7f\u7528\u6cdb\u578b\uff0c\u7531\u4e8e\u6cdb\u578b\u64e6\u9664\uff0c\u9700\u8981\u663e\u793a\u7684\u58f0\u660e\u7c7b\u578b\u4fe1\u606f\n        \/\/ 4. \u5206\u7ec4\n        KeyedStream&lt;Tuple2&lt;String, Long&gt;, String&gt; tuple2StringKeyedStream = singleOutputStreamOperator.keyBy(t -&gt; t.f0);\n        \/\/ 5. \u6c42\u548c\n        SingleOutputStreamOperator&lt;Tuple2&lt;String, Long&gt;&gt; sum = tuple2StringKeyedStream.sum(1);\n        \/\/ 6. \u6253\u5370\n        sum.print();\n        System.out.println(\"========\");\n        \/\/ 7. \u6c42\u6700\u5927\n        SingleOutputStreamOperator&lt;Tuple2&lt;String, Long&gt;&gt; tuple2SingleOutputStreamOperator = singleOutputStreamOperator.keyBy(t -&gt; t.f0).max(1);\n        tuple2SingleOutputStreamOperator.printToErr();\n        \/\/ 8. \u6267\u884c\n        executionEnvironment.execute();\n    }\n}<\/pre>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<p>\u3000\u3000debug \u67e5\u770b\u5176\u76f8\u5173\u5bf9\u8c61\uff1a\u53ef\u4ee5\u770b\u5230\u9ed8\u8ba4\u7684\u5e76\u884c\u5ea6\u548c\u76f8\u5173\u7684\u8f6c\u6362<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620172123285-677268564.png\" alt=\"\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%E7%AE%97%E5%AD%90%E9%93%BE\"><\/span>3. \u7b97\u5b50\u94fe<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u3000\u3000\u6211\u4eec\u89c2\u5bdfwebui \u7ed9\u51fa\u7684\u8ba1\u5212\u56fe\u53d1\u73b0\uff0c\u8282\u70b9\u6570\u91cf\u548c\u4ee3\u7801\u4e2d\u7684\u7b97\u5b50\u4e0d\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\u3002 \u6709\u7684\u8282\u70b9\u4f1a\u628a\u591a\u4e2a\u4efb\u52a1\u8fde\u63a5\u5728\u4e00\u8d77\u5408\u5e76\u6210\u4e00\u4e2a\u5927\u4efb\u52a1\u3002\u4e0b\u9762\u89e3\u91ca\u5176\u539f\u56e0\u3002<\/p>\n\n\n\n<p>1.\u7b97\u5b50\u95f4\u7684\u6570\u636e\u4f20\u8f93<\/p>\n\n\n\n<p>\u3000\u3000\u4e00\u4e2a\u6570\u636e\u6d41\u5728\u7b97\u5b50\u4e4b\u95f4\u4f20\u8f93\u6570\u636e\u7684\u5f62\u5f0f\u53ef\u4ee5\u662f\u4e00\u5bf9\u4e00\u7684\u76f4\u901a\u6a21\u5f0f(forwarding)\uff0c\u4e5f\u53ef\u4ee5\u662f\u6253\u4e71\u7684\u91cd\u5206\u533a(redistributing)\u6a21\u5f0f\uff0c\u5177\u4f53\u662f\u54ea\u4e00\u79cd\u53d6\u51b3\u4e8e\u7b97\u5b50\u7684\u79cd\u7c7b<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620202612412-1418488980.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>(1)\u4e00\u5bf9\u4e00\u76f4\u901a<\/p>\n\n\n\n<p>\u3000\u3000\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u6570\u636e\u6d41\u7ef4\u62a4\u7740\u5206\u533a\u4ee5\u53ca\u5143\u7d20\u7684\u987a\u5e8f\u3002\u6bd4\u5982\u56fe\u4e2d\u7684source\u548cmap \u7b97\u5b50\uff0csource \u8bfb\u53d6\u5b8c\u4e4b\u540e\u53ef\u4ee5\u76f4\u63a5\u53d1\u7ed9map \u505a\u5904\u7406\uff0c\u4e0d\u9700\u8981\u91cd\u65b0\u5206\u533a\uff0c\u4e5f\u4e0d\u9700\u8981\u8c03\u6574\u6570\u636e\u7684\u987a\u5e8f\u3002\u8fd9\u610f\u5473\u7740map\u7b97\u5b50\u7684\u5b50\u4efb\u52a1\uff0c\u770b\u5230\u7684\u5143\u7d20\u4e2a\u6570\u548c\u987a\u5e8f\u8ddfsource \u7b97\u5b50\u7684\u5b50\u4efb\u52a1\u4ea7\u751f\u7684\u5b8c\u5168\u4e00\u6837\uff0c\u4fdd\u8bc1\u4e00\u5bf9\u4e00\u7684\u5173\u7cfb\u3002map\u3001filter\u3001flatMap\u7b49\u7b97\u5b50\u90fd\u662f\u8fd9\u79cd\u4e00\u5bf9\u4e00\u7684\u5173\u7cfb\u3002<\/p>\n\n\n\n<p>(2)\u91cd\u5206\u533a<\/p>\n\n\n\n<p>\u3000\u3000\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u6570\u636e\u6d41\u7684\u5206\u533a\u4f1a\u53d1\u751f\u6539\u53d8\u3002\u6bd4\u5982\u56fe\u4e2d\u7684map\u548c\u540e\u9762\u7684keyBy\/window\/apply\u7b97\u5b50\u3001\u4ee5\u53cakeyBy\/window\u7b97\u5b50\u548csink \u7b97\u5b50\u4e4b\u95f4\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6bcf\u4e00\u4e2a\u7b97\u5b50\u7684\u5b50\u4efb\u52a1\u4f1a\u6839\u636e\u6570\u636e\u4f20\u8f93\u7684\u7b56\u7565\uff0c\u628a\u6570\u636e\u53d1\u9001\u5230\u4e0d\u540c\u7684\u4e0b\u6e38\u76ee\u6807\u4efb\u52a1\u3002\u4f8b\u5982\uff1akeyBy\u662f\u5206\u7ec4\u64cd\u4f5c\uff0c\u672c\u8d28\u4e0a\u662f\u57fa\u4e8ekey\u8fdb\u884chash\u540e\u91cd\u5206\u533a\uff1b\u6bd4\u5982\u4ece\u5e76\u884c\u5ea6\u4e3a2\u7684window \u7b97\u5b50\u4f20\u9012\u5230\u5e76\u884c\u5ea6\u4e3a1 \u7684sink\uff0c\u8fd9\u65f6\u7684\u6570\u636e\u4f20\u8f93\u65b9\u5f0f\u662f\u518d\u5e73\u8861(rebalance),\u4f1a\u628a\u6570\u636e\u5747\u5300\u7684\u5411\u4e0b\u6e38\u5b50\u4efb\u52a1\u5206\u53d1\u51fa\u53bb\u3002\u8fd9\u4e9b\u4f20\u8f93\u65b9\u5f0f\u90fd\u4f1a\u5f15\u8d77\u91cd\u5206\u533a(redistribute)\u3002<\/p>\n\n\n\n<p>2.\u5408\u5e76\u7b97\u5b50\u94fe<\/p>\n\n\n\n<p>\u3000\u3000\u5e76\u884c\u5ea6\u76f8\u540c\u7684\u4e00\u5bf9\u4e00\u7b97\u5b50\u64cd\u4f5c\uff0c\u53ef\u4ee5\u76f4\u63a5\u8fde\u63a5\u5728\u4e00\u8d77\u5f62\u6210\u4e00\u4e2a\u5927\u7684\u4efb\u52a1(task),\u8fd9\u6837\u539f\u6765\u7b97\u5b50\u5c31\u6210\u4e86\u5408\u5e76\u4efb\u52a1\u91cc\u7684\u4e00\u90e8\u5206\u3002\u6bcf\u4e2a\u4efb\u52a1\u88ab\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u3002\u8fd9\u5c31\u662f\u5408\u5e76\u7b97\u5b50\u94fe\u3002\u5408\u5e76\u540e\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620202534966-1823566792.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5408\u5e76\u540e\u5c31\u6709\u4e94\u4e2a\u4efb\u52a1\uff0c\u7531\u4e94\u4e2a\u7ebf\u7a0b\u5e76\u884c\u6267\u884c\u3002\u5408\u5e76\u7b97\u5b50\u94fe\u53ef\u4ee5\u51cf\u5c11\u7ebf\u7a0b\u4e4b\u95f4\u7684\u8f6c\u6362\uff0c\u63d0\u5347\u541e\u5410\u91cf\u3002<\/p>\n\n\n\n<p>Flink \u9ed8\u8ba4\u6309\u7167\u7b97\u5b50\u94fe\u7684\u539f\u5219\u8fdb\u884c\u5408\u5e76\uff0c\u5982\u679c\u60f3\u7981\u6b62\u5408\u5e76\u6216\u8005\u81ea\u5b9a\u4e49\uff0c\u53ef\u4ee5\u5728\u4ee3\u7801\u5bf9\u7b97\u5b50\u505a\u4e00\u4e9b\u7279\u5b9a\u8bbe\u7f6e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-preformatted\">\/\/ \u7981\u7528\u7b97\u5b50\u94fe\nSingleOutputStreamOperator&lt;Tuple2&lt;String, Long&gt;&gt; singleOutputStreamOperator = txtDataSource\n                .flatMap((String line, Collector&lt;String&gt; words) -&gt; {\n                    Arrays.stream(line.split(\" \")).forEach(words::collect);\n                }).disableChaining()\n    \n\/\/ \u4ece\u5f53\u524d\u7b97\u5b50\u5f00\u59cb\u65b0\u94fe\n        SingleOutputStreamOperator&lt;Tuple2&lt;String, Long&gt;&gt; singleOutputStreamOperator = txtDataSource\n                .flatMap((String line, Collector&lt;String&gt; words) -&gt; {\n                    Arrays.stream(line.split(\" \")).forEach(words::collect);\n                }).startNewChain()    <\/pre>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%E4%BD%9C%E4%B8%9A%E5%9B%BE%E4%B8%8E%E6%89%A7%E8%A1%8C%E5%9B%BE\"><\/span>4. \u4f5c\u4e1a\u56fe\u4e0e\u6267\u884c\u56fe<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Flink\u4efb\u52a1\u8c03\u5ea6\u6267\u884c\u7684\u56fe\uff0c\u5176\u6309\u7167\u987a\u5e8f\u5206\u4e3a\u56db\u5c42\uff1a<\/p>\n\n\n\n<p>\u903b\u8f91\u6d41\u56fe-\u300b\u4f5c\u4e1a\u56fe-\u300b\u6267\u884c\u56fe-\u300b\u7269\u7406\u56fe<\/p>\n\n\n\n<p>\u6bd4\u5982\u4ee5soclet \u4e3a\u4f8b\u5b50\uff0c\u5176\u8f6c\u6362\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620214649687-334115453.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;1. \u903b\u8f91\u6d41\u56fe<\/p>\n\n\n\n<p>\u3000\u3000\u56fe\u4e2d\u7684\u8282\u70b9\u4e00\u822c\u5bf9\u5e94\u7b97\u5b50\u64cd\u4f5c\u3002\u5ba2\u6237\u7aef\u5b8c\u6210\u7684\u3002<\/p>\n\n\n\n<p>2. \u4f5c\u4e1a\u56fe<\/p>\n\n\n\n<p>\u3000\u3000\u6570\u636e\u6d41\u56fe\u7ecf\u8fc7\u4f18\u5316\u5c31\u662f\u4f5c\u4e1a\u56fe\u3002\u4e3b\u8981\u7684\u4f18\u5316\u4e3a\u5c06\u7b26\u5408\u6761\u4ef6\u7684\u8282\u70b9\u8fde\u63a5\u5728\u4e00\u8d77\u5408\u5e76\u6210\u4e00\u4e2a\u4efb\u52a1\u8282\u70b9\uff0c\u884c\u6210\u7b97\u5b50\u94fe\u3002\u4e5f\u662f\u5ba2\u6237\u7aef\u5b8c\u6210\u7684\uff0c\u4f5c\u4e1a\u63d0\u4ea4\u65f6\u4f20\u9012\u7ed9JobMaster\u3002<\/p>\n\n\n\n<p>3. \u6267\u884c\u56fe<\/p>\n\n\n\n<p>\u3000\u3000JobMaster \u6536\u5230JobGraph\u540e\u7528\u5b83\u751f\u6210\u6267\u884c\u56fe\u3002\u6267\u884c\u56fe\u662fJobGraph\u7684\u5e76\u884c\u5316\u7248\u672c\uff0c\u662f\u8c03\u5ea6\u5904\u6700\u6838\u5fc3\u7684\u6570\u636e\u7ed3\u6784\u3002\u548c\u4f5c\u4e1a\u56fe\u533a\u522b\u662f\u5bf9\u5b50\u4efb\u52a1\u8fdb\u884c\u4e86\u62c6\u5206\uff0c\u5e76\u660e\u786e\u4efb\u52a1\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>4. \u7269\u7406\u56fe<\/p>\n\n\n\n<p>\u3000\u3000JobMaster \u751f\u6210\u6267\u884c\u56fe\u540e\uff0c\u5c06\u5b83\u5206\u53d1\u7ed9TaskManager\u3002TasjkManager \u6839\u636e\u6267\u884c\u56fe\u90e8\u7f72\u4efb\u52a1\uff0c\u6700\u7ec8\u7684\u7269\u7406\u6267\u884c\u8fc7\u7a0b\u884c\u6210\u7269\u7406\u56fe\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u7269\u7406\u56fe\u5728\u6267\u884c\u56fe\u7684\u57fa\u7840\u4e0a\uff0c\u8fdb\u4e00\u6b65\u786e\u5b9a\u6570\u636e\u5b58\u653e\u7684\u4f4d\u7f6e\u548c\u6536\u53d1\u7684\u5177\u4f53\u65b9\u5f0f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_%E4%BB%BB%E5%8A%A1%E4%B8%8E%E4%BB%BB%E5%8A%A1%E6%A7%BD\"><\/span>5. \u4efb\u52a1\u4e0e\u4efb\u52a1\u69fd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>&nbsp;\u3000\u3000\u5728\u4e4b\u524d\u7684\u6d4b\u8bd5\u4e2d\uff0c\u6211\u4eec\u4e09\u4e2ataskManager\u7684slots\u4efb\u52a1\u69fd\u4e3a3\u3002\u63d0\u4ea4\u4efb\u52a1cn.qz.SocketStreamWordCount \u7684\u65f6\u5019\u9009\u62e9\u7684\u5e76\u884c\u5ea6\u4e3a2\uff0c \u663e\u793a\u7684\u4efb\u52a1\u5e94\u8be5\u662f\u67095\u4e2a(1+2+2)\uff0c\u4f46\u662f\u5374\u5360\u636e\u4e86\u4e24\u4e2a\u4efb\u52a1\u69fd\uff0c\u4e0b\u9762\u89e3\u91ca\u5176\u539f\u56e0\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620211718461-2052754504.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>&nbsp;1.\u4efb\u52a1\u69fd<\/p>\n\n\n\n<p>flink\u4e2d\u4e00\u4e2aworker(taskmanager)\u662f\u4e00\u4e2aJVM\u8fdb\u7a0b\uff0c\u65e2\u7136\u662f\u8fdb\u7a0b\u5c31\u53ef\u4ee5\u542f\u52a8\u591a\u4e2a\u72ec\u7acb\u7684\u7ebf\u7a0b\u6765\u6267\u884c\u591a\u4e2a\u5b50\u4efb\u52a1(subtask)\u3002<\/p>\n\n\n\n<p>flink \u4e2d\u7684\u591a\u4e2a\u72ec\u7acb\u7684\u6267\u884c\u4efb\u52a1\u7684\u7ebf\u7a0b\u6570\u91cf\u5c31\u662f\u4efb\u52a1\u69fd\uff0c\u9ed8\u8ba4\u4e3a1\uff0c\u53ef\u4ee5\u8fdb\u884c\u4fee\u6539\u3002\u4fee\u6539 flink-conf.yaml\uff0c\u5982\u4e0b\u4fee\u6539\u540e\u6bcf\u4e2a\u8282\u70b9\u53d8\u4e3a4\u4e2a\u69fd\uff0c\u603b\u51713\u4e2a\u8282\u70b9\u5c31\u662f12\u4e2aslot\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">taskmanager.numberOfTaskSlots: 4<\/pre>\n\n\n\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cslot\u76ee\u524d\u7528\u6765\u9694\u79bb\u5185\u5b58\uff0c\u4e0d\u6d89\u53cacpu\u7684\u9694\u79bb\u3002\u5177\u4f53\u5e94\u7528\u9700\u8981\u6839\u636ecpu \u6838\u5fc3\u6570\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n\n\n\n<p>2.\u4efb\u52a1\u5bf9\u4efb\u52a1\u69fd\u7684\u5171\u4eab<\/p>\n\n\n\n<p>\u3000\u3000\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cflink \u5141\u8bb8\u5b50\u4efb\u52a1\u5171\u4eabslot\u3002\u6240\u4ee52\u4e2a\u5b50\u4efb\u52a1\u4e24\u4e2aslot(\u6700\u5927\u7684\u5b50\u4efb\u52a1\u6570\u91cf)\u5c31\u53ef\u4ee5\u5b8c\u6210\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4e0d\u540c\u4efb\u52a1\u8282\u70b9\u7684\u5b50\u4efb\u52a1\u53ef\u4ee5\u5171\u4eab\u4e00\u4e2aslot, \u6362\u53e5\u8bdd\u8bf4\u540c\u4e00\u4e2a\u4efb\u52a1\u7684\u591a\u4e2a\u5b50\u4efb\u52a1\u5fc5\u987b\u653e\u7f6e\u5728\u4e0d\u540c\u7684slot\u3002\u6bd4\u5982\u5e76\u884c\u5ea6\u4e3a2\uff0c\u53ef\u80fd\u7684\u7ed3\u679c\u5c31\u662f<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/img2022.cnblogs.com\/blog\/1196212\/202206\/1196212-20220620211857056-1119091574.png\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u3000\u3000\u5230\u8fd9\u91cc\u53ef\u80fd\u6709\u4e2a\u7591\u95ee\u5c31\u662f\u65e2\u7136\u60f3\u8981\u6700\u5927\u5229\u7528\u8ba1\u7b97\u8d44\u6e90\uff0c\u4e3a\u4ec0\u4e48\u53c8\u5728\u4e00\u4e2a\u4efb\u52a1\u69fd\u5e76\u884c\u5904\u7406\u591a\u4e2a\u4efb\u52a1\u4e86(\u4e00\u4e2a\u7ebf\u7a0b\u5e72\u591a\u4ef6\u4e8b)?<\/p>\n\n\n\n<p>\u3000\u3000\u539f\u56e0\u662f\uff1a \u4e0d\u540c\u7684\u4efb\u52a1\u5bf9\u8d44\u6e90\u5360\u7528\u4e0d\u540c\uff0c\u6bd4\u5982source\u3001map \u3001sink\u53ef\u80fd\u5904\u7406\u65f6\u95f4\u6781\u77ed\uff0c\u800cwindow\u7b49\u8f6c\u6362\u64cd\u4f5c\u65f6\u95f4\u957f(\u8d44\u6e90\u5bc6\u96c6\u578b\u4efb\u52a1)\u3002\u5982\u679c\u6bcf\u4e2a\u4efb\u52a1\u4e00\u4e2aslot\uff0c\u9020\u6210\u7684\u73b0\u8c61\u5c31\u662f\u4e0a\u6e38\u7684source(\u7b49\u5f85\u4e0b\u6e38\u7684window\u4efb\u52a1\u53d1\u901a\u77e5\u800c\u963b\u585e\uff0c\u76f8\u5f53\u4e8e\u80cc\u538b)\u548c\u4e0b\u6e38\u7684sink\u53ef\u80fd\u957f\u65f6\u95f4\u6d6a\u8d39\uff0c\u4f46\u662fwindows\u5374\u5fd9\u6b7b\uff0c\u51fa\u73b0\u8d44\u6e90\u5229\u7528\u4e0d\u5e73\u8861\u3002\u4e8e\u662f\u51fa\u73b0\u4e86\u4efb\u52a1\u5171\u4eab\uff0c\u5c06\u8d44\u6e90\u5bc6\u96c6\u578b\u548c\u975e\u5bc6\u96c6\u578b\u653e\u5230\u4e00\u4e2aslot\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u81ea\u884c\u5206\u914d\u5bf9\u8d44\u6e90\u5360\u7528\u7684\u6bd4\u4f8b\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5982\u679c\u60f3\u67d0\u4e2a\u4efb\u52a1\u72ec\u5360\u4e00\u4e2aslot\uff0c\u6216\u8005\u53ea\u6709\u67d0\u90e8\u5206\u7b97\u5b50\u5171\u4eabslot\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u5171\u4eab\u7ec4\uff1a\u53ea\u6709\u5c5e\u4e8e\u4e00\u4e2aslot\u7ec4\u7684\u5b50\u4efb\u52a1\u624d\u4f1a\u5f00\u542f\u5171\u4eabslot\uff0c\u4e0d\u540c\u7ec4\u4e4b\u95f4\u7684\u4efb\u52a1\u5fc5\u987b\u5206\u914d\u5230\u4e0d\u540c\u7684slot \u6570\u91cf\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">        SingleOutputStreamOperator&lt;Tuple2&lt;String, Long&gt;&gt; singleOutputStreamOperator = txtDataSource\n                .flatMap((String line, Collector&lt;String&gt; words) -&gt; {\n                    Arrays.stream(line.split(\" \")).forEach(words::collect);\n                }).slotSharingGroup(\"1\")<\/pre>\n\n\n\n<p>3.\u4efb\u52a1\u69fd\u548c\u5e76\u884c\u5ea6\u7684\u5173\u7cfb<\/p>\n\n\n\n<p>\u3000\u3000\u6574\u4e2a\u6d41\u5904\u7406\u7a0b\u5e8f\u7684\u5e76\u884c\u5ea6\uff0c\u5e94\u8be5\u662f\u6240\u6709\u7b97\u5b50\u4e2d\u5e76\u884c\u5ea6\u6700\u5927\u7684\u90a3\u4e2a\uff0c\u4e5f\u5c31\u662f\u6240\u9700\u8981\u7684slot \u6570\u91cf(\u8fd9\u79cd\u662f\u4e0d\u6307\u5b9a\u63d2\u69fd\u7ec4\u7684\u60c5\u51b5)\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/developer.aliyun.com\/profile\/expert\/fkjpbdp6zbdkm?isInAliyunApp=false\">https:\/\/developer.aliyun.com\/profile\/expert\/fkjpbdp6zbdkm?isInAliyunApp=false<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001Flink\u8fd0\u884c\u65f6\u5404\u4e2a\u7ec4\u4ef6\u4ecb\u7ecd Flink \u8fd0\u884c\u65f6\u67b6\u6784\u4e3b\u8981\u5305\u62ec\u56db\u4e2a\u4e0d\u540c\u7684\u7ec4\u4ef6\uff0c\u5b83\u4eec\u4f1a\u5728\u8fd0\u884c\u6d41\u5904\u7406\u5e94&hellip; <a href=\"http:\/\/viplao.com\/index.php\/2022\/10\/29\/%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7-flink-%e8%bf%90%e8%a1%8c%e6%9e%b6%e6%9e%84%e5%ad%a6%e4%b9%a0\/\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">\u8fd0\u7ef4\u5de5\u5177 &#8211; Flink \u8fd0\u884c\u67b6\u6784\u5b66\u4e60<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"views":1063,"_links":{"self":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1057"}],"collection":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/comments?post=1057"}],"version-history":[{"count":5,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1057\/revisions"}],"predecessor-version":[{"id":1062,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1057\/revisions\/1062"}],"wp:attachment":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/media?parent=1057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/categories?post=1057"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/tags?post=1057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}