{"id":41394,"date":"2024-12-01T10:11:59","date_gmt":"2024-12-01T02:11:59","guid":{"rendered":"https:\/\/fwq.ai\/blog\/41394\/"},"modified":"2024-12-01T10:11:59","modified_gmt":"2024-12-01T02:11:59","slug":"%e5%af%b9%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%bf%9b%e8%a1%8c%e7%ae%80%e5%8d%95%e7%9a%84mapreduce%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/41394\/","title":{"rendered":"\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u7b80\u5355\u7684mapReduce\u64cd\u4f5c"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u7b80\u5355\u7684mapReduce\u64cd\u4f5c<\/span><\/p>\n

\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u7b80\u5355\u7684mapReduce\u64cd\u4f5c<\/h1>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-20 08:09:32<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300a\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u7b80\u5355\u7684mapReduce\u64cd\u4f5c\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868<\/p>\n

elems := [n]string{...}<\/pre>\n
\u6211\u60f3\u6267\u884c\u4e00\u4e2a\u7b80\u5355\u7684mapreduce\u64cd\u4f5c\uff0c\u8fd9\u6837\u6211<\/p>\n
    \n
  1. \n
    \u5c06\u6bcf\u4e2a\u5b57\u7b26\u4e32\u6620\u5c04\u5230\u4e0d\u540c\u7684\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982 string -> $string<\/code> <\/p>\n<\/li>\n
  2. \n
    \u5c06\u6240\u6709\u5b57\u7b26\u4e32\u7f29\u51cf\u4e3a\u4e00\u4e2a\u5e26\u6709\u5206\u9694\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982{s1, s2, s3} -> s1@s2@s3<\/code><\/p>\n<\/li>\n<\/ol>\n
    \u603b\u800c\u8a00\u4e4b\uff1a{s1, s2, s3} -> $s1@$s2@$s3<\/code><\/p>\n
    \u6700\u597d\u7684\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n
    \u6211\u6b63\u5728\u5bfb\u627e\u6548\u7387\u548c\u53ef\u8bfb\u6027<\/p>\n
    \u5982\u679c\u5b83\u8db3\u591f\u901a\u7528\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u5728\u5b57\u7b26\u4e32\u4e0a\u5de5\u4f5c\uff0c\u8fd8\u6709\u52a0\u5206<\/p>\n
     <\/p>\n
    \u89e3\u51b3\u65b9\u6848<\/h2>\n
     <\/p>\n
    \u5bf9\u4e8e\u4ec5\u6620\u5c04\u5217\u8868\uff0c\u9664\u4e86\u68c0\u67e5\u6bcf\u4e2a\u5b57\u7b26\u4e32\u4e4b\u5916\uff0c\u60a8\u6ca1\u6709\u592a\u591a\u9009\u62e9\u3002\u5982\u679c\u8f6c\u6362\u7b97\u6cd5\u5f88\u8017\u65f6\u5e76\u4e14\u60a8\u9700\u8981\u901f\u5ea6\uff0c\u60a8\u53ef\u4ee5\u8003\u8651\u62c6\u5206\u4f5c\u4e1a\u5e76\u4f7f\u7528 go \u4f8b\u7a0b\u3002\u6700\u540e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 strings.Join \u51fd\u6570\uff0c\u5b83\u6709\u4e00\u4e2a\u6307\u5b9a\u5206\u9694\u7b26\u7684\u9009\u9879\uff0c\u8fd9\u901a\u5e38\u53ef\u4ee5\u6709\u6548\u5730\u6267\u884c\u5f52\u7ea6\u90e8\u5206\u3002\u6570\u636e\u96c6\u7684\u5927\u5c0f\u4e5f\u53ef\u4ee5\u662f\u4e00\u4e2a\u8003\u8651\u56e0\u7d20\uff0c\u5bf9\u4e8e\u8f83\u5927\u5c3a\u5bf8\u7684\u5217\u8868\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u5c06\u6027\u80fd\u4e0e\u5b57\u7b26\u4e32\u8fdb\u884c\u6bd4\u8f83\u3002\u52a0\u5165\u548c\u60a8\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49\u7b97\u6cd5\uff0c\u770b\u770b\u60a8\u662f\u5426\u60f3\u4f7f\u7528\u591a\u4e2a go \u4f8b\u7a0b\/\u901a\u9053\u6765\u5b9e\u73b0\u60a8\u60f3\u8981\u7684\u6548\u679c\u3002 <\/p>\n
    \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGolang\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5f53\u524d\u4f4d\u7f6e\uff1a > > > > \u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u7b80\u5355\u7684mapReduce\u64cd\u4f5c \u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u7b80\u5355\u7684mapReduce\u64cd\u4f5c \u6765\u6e90\uff1astackoverflow 2024-04-20 08:09:32 0\u6d4f\u89c8 \u6536\u85cf \u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300a\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u7b80\u5355\u7684mapReduce\u64cd\u4f5c\u300b\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01 \u95ee\u9898\u5185\u5bb9 \u6211\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868 elems := [n]string{…} \u6211\u60f3\u6267\u884c\u4e00\u4e2a\u7b80\u5355\u7684mapreduce\u64cd\u4f5c\uff0c\u8fd9\u6837\u6211 \u5c06\u6bcf\u4e2a\u5b57\u7b26\u4e32\u6620\u5c04\u5230\u4e0d\u540c\u7684\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982 string -> $string \u5c06\u6240\u6709\u5b57\u7b26\u4e32\u7f29\u51cf\u4e3a\u4e00\u4e2a\u5e26\u6709\u5206\u9694\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982{s1, s2, s3} -> s1@s2@s3 \u603b\u800c\u8a00\u4e4b\uff1a{s1, s2, s3} -> $s1@$s2@$s3 \u6700\u597d\u7684\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f \u6211\u6b63\u5728\u5bfb\u627e\u6548\u7387\u548c\u53ef\u8bfb\u6027 \u5982\u679c\u5b83\u8db3\u591f\u901a\u7528\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u5728\u5b57\u7b26\u4e32\u4e0a\u5de5\u4f5c\uff0c\u8fd8\u6709\u52a0\u5206 \u89e3\u51b3\u65b9\u6848 \u5bf9\u4e8e\u4ec5\u6620\u5c04\u5217\u8868\uff0c\u9664\u4e86\u68c0\u67e5\u6bcf\u4e2a\u5b57\u7b26\u4e32\u4e4b\u5916\uff0c\u60a8\u6ca1\u6709\u592a\u591a\u9009\u62e9\u3002\u5982\u679c\u8f6c\u6362\u7b97\u6cd5\u5f88\u8017\u65f6\u5e76\u4e14\u60a8\u9700\u8981\u901f\u5ea6\uff0c\u60a8\u53ef\u4ee5\u8003\u8651\u62c6\u5206\u4f5c\u4e1a\u5e76\u4f7f\u7528 go \u4f8b\u7a0b\u3002\u6700\u540e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 strings.Join \u51fd\u6570\uff0c\u5b83\u6709\u4e00\u4e2a\u6307\u5b9a\u5206\u9694\u7b26\u7684\u9009\u9879\uff0c\u8fd9\u901a\u5e38\u53ef\u4ee5\u6709\u6548\u5730\u6267\u884c\u5f52\u7ea6\u90e8\u5206\u3002\u6570\u636e\u96c6\u7684\u5927\u5c0f\u4e5f\u53ef\u4ee5\u662f\u4e00\u4e2a\u8003\u8651\u56e0\u7d20\uff0c\u5bf9\u4e8e\u8f83\u5927\u5c3a\u5bf8\u7684\u5217\u8868\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u5c06\u6027\u80fd\u4e0e\u5b57\u7b26\u4e32\u8fdb\u884c\u6bd4\u8f83\u3002\u52a0\u5165\u548c\u60a8\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49\u7b97\u6cd5\uff0c\u770b\u770b\u60a8\u662f\u5426\u60f3\u4f7f\u7528\u591a\u4e2a go \u4f8b\u7a0b\/\u901a\u9053\u6765\u5b9e\u73b0\u60a8\u60f3\u8981\u7684\u6548\u679c\u3002 \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGolang\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-41394","post","type-post","status-publish","format-standard","hentry","category-docker"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/41394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=41394"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/41394\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=41394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=41394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=41394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}