{"id":232,"date":"2020-03-16T14:14:31","date_gmt":"2020-03-16T06:14:31","guid":{"rendered":"https:\/\/blog.frost-s.tk\/?p=232"},"modified":"2020-03-16T14:18:10","modified_gmt":"2020-03-16T06:18:10","slug":"spark%e7%9f%a5%e8%af%86%e6%95%b4%e7%90%86","status":"publish","type":"post","link":"https:\/\/blog.frost-s.com\/index.php\/2020\/03\/16\/spark%e7%9f%a5%e8%af%86%e6%95%b4%e7%90%86\/","title":{"rendered":"spark\u77e5\u8bc6\u6574\u7406"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\">\u4ec0\u4e48\u662fspark\uff1f<\/h4>\n\n\n\n<p class=\"has-drop-cap\">Spark\u662f\u57fa\u4e8e\u5185\u5b58\u8ba1\u7b97\u5927\u6570\u636e\u5206\u6790\u5f15\u64ce\uff0c\u63d0\u9ad8\u4e86\u5728\u5927\u6570\u636e\u73af\u5883\u4e0b\u6570\u636e\u5904\u7406\u7684\u5b9e\u65f6\u6027\u3002Spark\u76ee\u524d\u6765\u8bf4\u4ec5\u4ec5\u53ea\u6d89\u53ca\u5230\u6570\u636e\u7684\u8ba1\u7b97\uff0c\u5e76\u6ca1\u6709\u6d89\u53ca\u5230\u6570\u636e\u7684\u5b58\u50a8\u3002<\/p>\n\n\n\n<ul><li>spark\u7684\u4f18\u70b9\u4ee5\u53ca\u591a\u4f59MapReduce\u7684\u4f18\u52bf<\/li><\/ul>\n\n\n\n<p>&nbsp;MapReduce\u5b58\u5728\u7684\u95ee\u9898<\/p>\n\n\n\n<p>1. MapReduce\u6846\u67b6\u5c40\u9650\u6027<\/p>\n\n\n\n<p>\u3000\u30001\uff09\u4ec5\u652f\u6301Map\u548cReduce\u4e24\u79cd\u64cd\u4f5c<\/p>\n\n\n\n<p>\u3000\u30002\uff09\u5904\u7406\u6548\u7387\u4f4e\u6548\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u3000\u3000a\uff09Map\u4e2d\u95f4\u7ed3\u679c\u5199\u78c1\u76d8\uff0cReduce\u5199HDFS\uff0c\u591a\u4e2aMR\u4e4b\u95f4\u901a\u8fc7HDFS\u4ea4\u6362\u6570\u636e; \u4efb\u52a1\u8c03\u5ea6\u548c\u542f\u52a8\u5f00\u9500\u5927;<\/p>\n\n\n\n<p>\u3000\u3000\u3000\u3000b\uff09\u65e0\u6cd5\u5145\u5206\u5229\u7528\u5185\u5b58<\/p>\n\n\n\n<p>\u3000\u3000\u3000\u3000c\uff09Map\u7aef\u548cReduce\u7aef\u5747\u9700\u8981\u6392\u5e8f<\/p>\n\n\n\n<p>\u3000\u30003\uff09\u4e0d\u9002\u5408\u8fed\u4ee3\u8ba1\u7b97(\u5982\u673a\u5668\u5b66\u4e60\u3001\u56fe\u8ba1\u7b97\u7b49)\uff0c\u4ea4\u4e92\u5f0f\u5904\u7406(\u6570\u636e\u6316\u6398) \u548c\u6d41\u5f0f\u5904\u7406(\u70b9\u51fb\u65e5\u5fd7\u5206\u6790)<\/p>\n\n\n\n<p>2. MapReduce\u7f16\u7a0b\u4e0d\u591f\u7075\u6d3b<\/p>\n\n\n\n<p>\u3000\u30001\uff09\u5c1d\u8bd5scala\u51fd\u6570\u5f0f\u7f16\u7a0b\u8bed\u8a00<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<ul><li>Spark\u7684\u7279\u70b9\u53ca\u4f18\u52bf<\/li><\/ul>\n\n\n\n<p class=\"has-text-color has-vivid-red-color\">1. \u9ad8\u6548(\u6bd4MapReduce\u5feb10~100\u500d)<\/p>\n\n\n\n<p>\u3000\u30001\uff09\u5185\u5b58\u8ba1\u7b97\u5f15\u64ce\uff0c\u63d0\u4f9bCache\u673a\u5236\u6765\u652f\u6301\u9700\u8981\u53cd\u590d\u8fed\u4ee3\u8ba1\u7b97\u6216\u8005\u591a\u6b21\u6570\u636e\u5171\u4eab\uff0c\u51cf\u5c11\u6570\u636e\u8bfb\u53d6\u7684IO\u5f00\u9500<\/p>\n\n\n\n<p>\u3000\u30002\uff09DAG\u5f15\u64ce\uff0c\u51cf\u5c11\u591a\u6b21\u8ba1\u7b97\u4e4b\u95f4\u4e2d\u95f4\u7ed3\u679c\u5199\u5230HDFS\u7684\u5f00\u9500<\/p>\n\n\n\n<p>\u3000\u30003\uff09\u4f7f\u7528\u591a\u7ebf\u7a0b\u6c60\u6a21\u578b\u6765\u51cf\u5c11task\u542f\u52a8\u5f00\u7a0d\uff0cshuffle\u8fc7\u7a0b\u4e2d\u907f\u514d \u4e0d\u5fc5\u8981\u7684sort\u64cd\u4f5c\u4ee5\u53ca\u51cf\u5c11\u78c1\u76d8IO\u64cd\u4f5c<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-red-color\">2. \u6613\u7528<\/p>\n\n\n\n<p>\u3000\u30001\uff09\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684API\uff0c\u652f\u6301Java\uff0cScala\uff0cPython\u548cR\u56db\u79cd\u8bed\u8a00<\/p>\n\n\n\n<p>\u3000\u30002\uff09\u4ee3\u7801\u91cf\u6bd4MapReduce\u5c112~5\u500d<\/p>\n\n\n\n<ul style=\"color:#cf2e2e\"><li>\u517c\u5bb9\u6027<\/li><\/ul>\n\n\n\n<p>\u53ef\u4e0eHadoop\u96c6\u6210 \u8bfb\u5199HDFS\/Hbase\/Cassandra \u4e0eYARN\u96c6\u6210<\/p>\n\n\n\n<ul style=\"color:#cf2e2e\"><li>\u901a\u7528\u6027<\/li><\/ul>\n\n\n\n<p>&nbsp;&nbsp;&nbsp; Spark\u53ef\u4ee5\u7528\u4e8e\u6279\u5904\u7406\u3001\u4ea4\u4e92\u5f0f\u67e5\u8be2\uff08Spark&nbsp;SQL\uff09\u3001\u5b9e\u65f6\u6d41\u5904\u7406\uff08Spark&nbsp;Streaming\uff09\u3001\u673a\u5668\u5b66\u4e60\uff08Spark&nbsp;MLlib\uff09\u548c\u56fe\u8ba1\u7b97\uff08GraphX\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662fspark\uff1f Spark\u662f\u57fa\u4e8e\u5185\u5b58\u8ba1\u7b97\u5927\u6570\u636e\u5206\u6790\u5f15\u64ce\uff0c\u63d0\u9ad8\u4e86\u5728\u5927\u6570\u636e\u73af\u5883\u4e0b\u6570\u636e\u5904\u7406\u7684\u5b9e\u65f6\u6027\u3002Spark\u76ee [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":43,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/posts\/232"}],"collection":[{"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/comments?post=232"}],"version-history":[{"count":4,"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/posts\/232\/revisions"}],"predecessor-version":[{"id":237,"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/posts\/232\/revisions\/237"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/media\/43"}],"wp:attachment":[{"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/media?parent=232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/categories?post=232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.frost-s.com\/index.php\/wp-json\/wp\/v2\/tags?post=232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}