{"id":199,"date":"2018-03-12T14:09:45","date_gmt":"2018-03-12T06:09:45","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=199"},"modified":"2018-03-12T14:09:45","modified_gmt":"2018-03-12T06:09:45","slug":"hadoop%e6%80%a7%e8%83%bd%e6%a8%a1%e5%9e%8b%ef%bc%886%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=199","title":{"rendered":"Hadoop\u6027\u80fd\u6a21\u578b\uff086\uff09"},"content":{"rendered":"<p>\u7b2c\u4e09\u6b65\uff1a\u78c1\u76d8\u548c\u5185\u5b58\u4e2d\u7684\u6587\u4ef6\u5168\u90e8\u5408\u5e76\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-200\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/\u4e0b\u8f7d-40.png\" alt=\"\" width=\"899\" height=\"251\" \/><\/p>\n<p>\u6392\u5e8f\u9636\u6bb5\u7684\u6d88\u8017\u662f\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-201\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/\u4e0b\u8f7d-41.png\" alt=\"\" width=\"898\" height=\"218\" \/><\/p>\n<p><span style=\"font-size: medium;\"><b>3.3 Reduce\u548cWrite\u9636\u6bb5\u6a21\u578b<\/b><\/span><\/p>\n<p>\u6700\u7ec8\uff0c\u7528\u6237\u5b9a\u4e49\u7684reduce\u51fd\u6570\u88ab\u6267\u884c\uff0c\u8f93\u51fa\u7ed3\u679c\u5199\u5165HDFS\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-202\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/\u4e0b\u8f7d-42.png\" alt=\"\" width=\"903\" height=\"376\" \/><br \/>\nreduce\u51fd\u6570\u7684\u8f93\u5165\u4f9d\u9760\u5185\u5b58\u548c\u78c1\u76d8\u4e0a\u7684shuffle\u6587\u4ef6\uff08\u5728shuffle\u548cSort\u9636\u6bb5\u751f\u6210\uff09\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-203\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/\u4e0b\u8f7d-43.png\" alt=\"\" width=\"910\" height=\"95\" \/><br \/>\n\u6574\u4e2aWrite\u9636\u6bb5\u7684\u6d88\u8017\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-204\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/\u4e0b\u8f7d-44.png\" alt=\"\" width=\"905\" height=\"206\" \/><\/p>\n<p><span style=\"font-size: medium;\"><b>3.4 \u6574\u4e2aReduce\u4efb\u52a1\u6a21\u578b<\/b><\/span><\/p>\n<p>\u4e0a\u9762\u7684\u6a21\u578b\u662f\u5355\u4e2areduce\u4efb\u52a1\uff0c\u6574\u4e2a\u5355\u4e2areduce\u4efb\u52a1\u7684\u6d88\u8017\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-205\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/\u4e0b\u8f7d-45.png\" alt=\"\" width=\"900\" height=\"86\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b2c\u4e09\u6b65\uff1a\u78c1\u76d8\u548c\u5185\u5b58\u4e2d\u7684\u6587\u4ef6\u5168\u90e8\u5408\u5e76\u3002 \u6392\u5e8f\u9636\u6bb5\u7684\u6d88\u8017\u662f\uff1a 3.3 Reduce\u548cWrite\u9636\u6bb5\u6a21\u578b \u6700\u7ec8\uff0c\u7528\u6237 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[63],"tags":[80,123,122,120,121],"class_list":["post-199","post","type-post","status-publish","format-standard","hentry","category-63","tag-hadoop","tag-hdfs","tag-mapreduce","tag-120","tag-121"],"views":1431,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=199"}],"version-history":[{"count":1,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/199\/revisions"}],"predecessor-version":[{"id":206,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/199\/revisions\/206"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=199"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}