{"height":"190","author_url":"https://blog.hatena.ne.jp/killingout_n-bita/","categories":["Hadoop","MapReduce","\u6e29\u5dde\u871c\u67d1"],"description":"\u76ee\u6b21 \u6982\u8981 in-mapper conbiner\u30d1\u30bf\u30fc\u30f3 \u53c2\u8003\u30b5\u30a4\u30c8 TODO \u30c6\u30f3\u30d7\u30ec \u6982\u8981 Hadoop MapReduce \u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3 \u2015MapReduce\u306b\u3088\u308b\u5927\u898f\u6a21\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u51e6\u7406\u306e\uff13\u7ae0\u306e\u7c21\u5358\u306a\u307e\u3068\u3081\u3002 in-mapper combiner\u30d1\u30bf\u30fc\u30f3 \u51e6\u7406\u306e\u6982\u8981 Mapper \u2193 \u30ed\u30fc\u30ab\u30eb(\u5404\u30ce\u30fc\u30c9) ----------------------------------------------- \u2193 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af Combiner : Mapper\u304c\u751f\u6210\u3057\u305f\u4e2d\u9593\u30c7\u30fc\u30bf\u3092\u524a\u6e1b\u3059\u308b\u3002 \u2193 ReducerMapper\u304b\u3089\u51fa\u305f\u30c7\u30fc\u30bf\u306f\u3001\u4ed6\u30ce\u30fc\u30c9\u306b\u3001\u30cd\u30c3\u30c8\u8d8a\u3057\u306b\u30b3\u30d4\u30fc\u3055\u308c\u308b\u3002 \u3053\u306e\u30c7\u30fc\u30bf\u2026","provider_name":"Hatena Blog","version":"1.0","image_url":"https://images-fe.ssl-images-amazon.com/images/I/51Nb6sehnIL._SL160_.jpg","title":"MapReduce\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3","provider_url":"https://hatena.blog","published":"2011-11-23 23:09:58","url":"https://killingout-n-bita.hatenadiary.org/entry/20111123/1322057398","blog_url":"https://killingout-n-bita.hatenadiary.org/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkillingout-n-bita.hatenadiary.org%2Fentry%2F20111123%2F1322057398\" title=\"MapReduce\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3 - \u30aa\u30dc\u30a8\u30ac\u30ad\u7528\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","blog_title":"\u30aa\u30dc\u30a8\u30ac\u30ad\u7528","type":"rich","author_name":"killingout_n-bita"}