{"categories":["Hadoop","MapReduce"],"description":"key\u3060\u3051\u3067\u306a\u304f\u3001Type mismatch in value from map \u3068\u3044\u3046\u3088\u3046\u306bvalue\u306e\u30a8\u30e9\u30fc\u3082\u3042\u308b\u3053\u306e\u30a8\u30e9\u30fc\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u7d9a\u304f expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable\u671f\u5f85\u3057\u3066\u306a\u3044\u578b\u3092\u53d7\u3051\u53d6\u3063\u305f\u305f\u3081\u306e\u30a8\u30e9\u30fc\u3060\u304c\u3001 MapReduce\u3067\u901a\u5e38\u3001\u305d\u306e\u3088\u3046\u306a\u30df\u30b9\u3092\u3059\u308b\u3068\u3001\u3082\u3063\u3068\u524d\u306e\u6bb5\u968e\u3067\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u308f\u304b\u308a\u3084\u3059\u3044\u4e0a\u8a18\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u306e\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u65e7API(mapred), \u65b0API(mapreduce)\u3092 \u6df7\u305c\u305f\u5834\u5408\u306b\u767a\u751f\u3059\u308b import org.ap\u2026","author_url":"https://blog.hatena.ne.jp/pandazx/","height":"190","blog_title":"pandazx's blog","blog_url":"https://pandazx.hatenablog.com/","provider_name":"Hatena Blog","title":"MapReduce\u306e\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\uff1aType mismatch in key from map","image_url":null,"published":"2013-01-13 19:23:24","author_name":"pandazx","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpandazx.hatenablog.com%2Fentry%2F2013%2F01%2F13%2F192324\" title=\"MapReduce\u306e\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\uff1aType mismatch in key from map - pandazx&#39;s blog\" 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%","url":"https://pandazx.hatenablog.com/entry/2013/01/13/192324","provider_url":"https://hatena.blog","type":"rich"}