{"id":6543,"date":"2022-04-09T17:19:59","date_gmt":"2022-04-09T09:19:59","guid":{"rendered":"https:\/\/egonlin.com\/?p=6543"},"modified":"2022-04-09T17:20:50","modified_gmt":"2022-04-09T09:20:50","slug":"hadoop%e3%80%81hive%e3%80%81spark-%e4%b9%8b%e9%97%b4%e6%98%af%e4%bb%80%e4%b9%88%e5%85%b3%e7%b3%bb%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=6543","title":{"rendered":"Hadoop\u3001Hive\u3001Spark \u4e4b\u95f4\u662f\u4ec0\u4e48\u5173\u7cfb\uff1f"},"content":{"rendered":"

\u4e00 \u524d\u8a00<\/h1>\n

\u5927\u6570\u636e\u672c\u8eab\u662f\u4e2a\u5f88\u5bbd\u6cdb\u7684\u6982\u5ff5\uff0cHadoop\u751f\u6001\u5708(\u6216\u8005\u6cdb\u751f\u6001\u5708)\u57fa\u672c\u4e0a\u90fd\u662f\u4e3a\u4e86\u5904\u7406\u8d85\u8fc7\u5355\u673a\u5c3a\u5ea6\u7684\u6570\u636e\u5904\u7406\u800c\u8bde\u751f\u7684<\/strong>\u3002\u4f60\u53ef\u4ee5\u628a\u5b83\u6bd4\u4f5c\u4e00\u4e2a\u53a8\u623f\u6240\u4ee5\u9700\u8981\u7684\u5404\u79cd\u5de5\u5177\u3002\u9505\u7897\u74e2\u76c6\uff0c\u5404\u6709\u5404\u7684\u7528\u5904\uff0c\u4e92\u76f8\u4e4b\u95f4\u53c8\u6709\u91cd\u5408\u3002\u4f60\u53ef\u4ee5\u7528\u6c64\u9505\u76f4\u63a5\u5f53\u7897\u5403\u996d\u559d\u6c64\uff0c\u4f60\u53ef\u4ee5\u7528\u5c0f\u5200\u6216\u8005\u5228\u5b50\u53bb\u76ae\u3002\u4f46\u662f\u6bcf\u4e2a\u5de5\u5177\u6709\u81ea\u5df1\u7684\u7279\u6027\uff0c\u867d\u7136\u5947\u602a\u7684\u7ec4\u5408\u4e5f\u80fd\u5de5\u4f5c\uff0c\u4f46\u662f\u672a\u5fc5\u662f\u6700\u4f73\u9009\u62e9\u3002<\/p>\n

\u4e8c \u5927\u6570\u636e\uff0c\u9996\u5148\u4f60\u8981\u80fd\u5b58\u7684\u4e0b\u5927\u6570\u636e<\/h1>\n

\u4f20\u7edf\u7684\u6587\u4ef6\u7cfb\u7edf\u662f\u5355\u673a\u7684\uff0c\u4e0d\u80fd\u6a2a\u8de8\u4e0d\u540c\u7684\u673a\u5668\u3002HDFS(Hadoop Distributed FileSystem)\u7684\u8bbe\u8ba1\u672c\u8d28\u4e0a\u662f\u4e3a\u4e86\u5927\u91cf\u7684\u6570\u636e\u80fd\u6a2a\u8de8\u6210\u767e\u4e0a\u5343\u53f0\u673a\u5668\uff0c\u4f46\u662f\u4f60\u770b\u5230\u7684\u662f\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf\u800c\u4e0d\u662f\u5f88\u591a\u6587\u4ef6\u7cfb\u7edf\u3002<\/strong>\u6bd4\u5982\u4f60\u8bf4\u6211\u8981\u83b7\u53d6\/hdfs\/tmp\/file1\u7684\u6570\u636e\uff0c\u4f60\u5f15\u7528\u7684\u662f\u4e00\u4e2a\u6587\u4ef6\u8def\u5f84\uff0c\u4f46\u662f\u5b9e\u9645\u7684\u6570\u636e\u5b58\u653e\u5728\u5f88\u591a\u4e0d\u540c\u7684\u673a\u5668\u4e0a\u3002\u4f60\u4f5c\u4e3a\u7528\u6237\uff0c\u4e0d\u9700\u8981\u77e5\u9053\u8fd9\u4e9b\uff0c\u5c31\u597d\u6bd4\u5728\u5355\u673a\u4e0a\u4f60\u4e0d\u5173\u5fc3\u6587\u4ef6\u5206\u6563\u5728\u4ec0\u4e48\u78c1\u9053\u4ec0\u4e48\u6247\u533a\u4e00\u6837\u3002HDFS\u4e3a\u4f60\u7ba1\u7406\u8fd9\u4e9b\u6570\u636e\u3002<\/p>\n

\u5b58\u7684\u4e0b\u6570\u636e\u4e4b\u540e\uff0c\u4f60\u5c31\u5f00\u59cb\u8003\u8651\u600e\u4e48\u5904\u7406\u6570\u636e\u3002\u867d\u7136HDFS\u53ef\u4ee5\u4e3a\u4f60\u6574\u4f53\u7ba1\u7406\u4e0d\u540c\u673a\u5668\u4e0a\u7684\u6570\u636e\uff0c\u4f46\u662f\u8fd9\u4e9b\u6570\u636e\u592a\u5927\u4e86\u3002\u4e00\u53f0\u673a\u5668\u8bfb\u53d6\u6210T\u4e0aP\u7684\u6570\u636e(\u5f88\u5927\u7684\u6570\u636e\u54e6\uff0c\u6bd4\u5982\u6574\u4e2a\u4e1c\u4eac\u70ed\u6709\u53f2\u4ee5\u6765\u6240\u6709\u9ad8\u6e05\u7535\u5f71\u7684\u5927\u5c0f\u751a\u81f3\u66f4\u5927)\uff0c\u4e00\u53f0\u673a\u5668\u6162\u6162\u8dd1\u4e5f\u8bb8\u9700\u8981\u597d\u51e0\u5929\u751a\u81f3\u597d\u51e0\u5468\u3002\u5bf9\u4e8e\u5f88\u591a\u516c\u53f8\u6765\u8bf4\uff0c\u5355\u673a\u5904\u7406\u662f\u4e0d\u53ef\u5fcd\u53d7\u7684\uff0c\u6bd4\u5982\u5fae\u535a\u8981\u66f4\u65b024\u5c0f\u65f6\u70ed\u535a\uff0c\u5b83\u5fc5\u987b\u572824\u5c0f\u65f6\u4e4b\u5185\u8dd1\u5b8c\u8fd9\u4e9b\u5904\u7406\u3002\u90a3\u4e48\u6211\u5982\u679c\u8981\u7528\u5f88\u591a\u53f0\u673a\u5668\u5904\u7406\uff0c\u6211\u5c31\u9762\u4e34\u4e86\u5982\u4f55\u5206\u914d\u5de5\u4f5c\uff0c\u5982\u679c\u4e00\u53f0\u673a\u5668\u6302\u4e86\u5982\u4f55\u91cd\u65b0\u542f\u52a8\u76f8\u5e94\u7684\u4efb\u52a1\uff0c\u673a\u5668\u4e4b\u95f4\u5982\u4f55\u4e92\u76f8\u901a\u4fe1\u4ea4\u6362\u6570\u636e\u4ee5\u5b8c\u6210\u590d\u6742\u7684\u8ba1\u7b97\u7b49\u7b49\u3002\u8fd9\u5c31\u662fMapReduce \/ Tez \/ Spark\u7684\u529f\u80fd\u3002MapReduce\u662f\u7b2c\u4e00\u4ee3\u8ba1\u7b97\u5f15\u64ce\uff0cTez\u548cSpark\u662f\u7b2c\u4e8c\u4ee3<\/strong>\u3002MapReduce\u7684\u8bbe\u8ba1\uff0c\u91c7\u7528\u4e86\u5f88\u7b80\u5316\u7684\u8ba1\u7b97\u6a21\u578b\uff0c\u53ea\u6709Map\u548cReduce\u4e24\u4e2a\u8ba1\u7b97\u8fc7\u7a0b(\u4e2d\u95f4\u7528Shuffle\u4e32\u8054)\uff0c\u7528\u8fd9\u4e2a\u6a21\u578b\uff0c\u5df2\u7ecf\u53ef\u4ee5\u5904\u7406\u5927\u6570\u636e\u9886\u57df\u5f88\u5927\u4e00\u90e8\u5206\u95ee\u9898\u4e86\u3002<\/p>\n

\u4e09 \u90a3\u4ec0\u4e48\u662fMap\uff0c\u4ec0\u4e48\u662fReduce?<\/h1>\n

\u8003\u8651\u5982\u679c\u4f60\u8981\u7edf\u8ba1\u4e00\u4e2a\u5de8\u5927\u7684\u6587\u672c\u6587\u4ef6\u5b58\u50a8\u5728\u7c7b\u4f3cHDFS\u4e0a\uff0c\u4f60\u60f3\u8981\u77e5\u9053\u8fd9\u4e2a\u6587\u672c\u91cc\u5404\u4e2a\u8bcd\u7684\u51fa\u73b0\u9891\u7387\u3002\u4f60\u542f\u52a8\u4e86\u4e00\u4e2aMapReduce\u7a0b\u5e8f\u3002Map\u9636\u6bb5\uff0c\u51e0\u767e\u53f0\u673a\u5668\u540c\u65f6\u8bfb\u53d6\u8fd9\u4e2a\u6587\u4ef6\u7684\u5404\u4e2a\u90e8\u5206\uff0c\u5206\u522b\u628a\u5404\u81ea\u8bfb\u5230\u7684\u90e8\u5206\u5206\u522b\u7edf\u8ba1\u51fa\u8bcd\u9891\uff0c\u4ea7\u751f\u7c7b\u4f3c(hello, 12100\u6b21)\uff0c(world\uff0c15214\u6b21)\u7b49\u7b49\u8fd9\u6837\u7684Pair(\u6211\u8fd9\u91cc\u628aMap\u548cCombine\u653e\u5728\u4e00\u8d77\u8bf4\u4ee5\u4fbf\u7b80\u5316);\u8fd9\u51e0\u767e\u53f0\u673a\u5668\u5404\u81ea\u90fd\u4ea7\u751f\u4e86\u5982\u4e0a\u7684\u96c6\u5408\uff0c\u7136\u540e\u53c8\u6709\u51e0\u767e\u53f0\u673a\u5668\u542f\u52a8Reduce\u5904\u7406\u3002Reducer\u673a\u5668A\u5c06\u4eceMapper\u673a\u5668\u6536\u5230\u6240\u6709\u4ee5A\u5f00\u5934\u7684\u7edf\u8ba1\u7ed3\u679c\uff0c\u673a\u5668B\u5c06\u6536\u5230B\u5f00\u5934\u7684\u8bcd\u6c47\u7edf\u8ba1\u7ed3\u679c(\u5f53\u7136\u5b9e\u9645\u4e0a\u4e0d\u4f1a\u771f\u7684\u4ee5\u5b57\u6bcd\u5f00\u5934\u505a\u4f9d\u636e\uff0c\u800c\u662f\u7528\u51fd\u6570\u4ea7\u751fHash\u503c\u4ee5\u907f\u514d\u6570\u636e\u4e32\u5316\u3002\u56e0\u4e3a\u7c7b\u4f3cX\u5f00\u5934\u7684\u8bcd\u80af\u5b9a\u6bd4\u5176\u4ed6\u8981\u5c11\u5f97\u591a\uff0c\u800c\u4f60\u4e0d\u5e0c\u671b\u6570\u636e\u5904\u7406\u5404\u4e2a\u673a\u5668\u7684\u5de5\u4f5c\u91cf\u76f8\u5dee\u60ac\u6b8a)\u3002\u7136\u540e\u8fd9\u4e9bReducer\u5c06\u518d\u6b21\u6c47\u603b\uff0c(hello\uff0c12100)+(hello\uff0c12311)+(hello\uff0c345881)= (hello\uff0c370292)\u3002\u6bcf\u4e2aReducer\u90fd\u5982\u4e0a\u5904\u7406\uff0c\u4f60\u5c31\u5f97\u5230\u4e86\u6574\u4e2a\u6587\u4ef6\u7684\u8bcd\u9891\u7ed3\u679c\u3002<\/p>\n

\u8fd9\u770b\u4f3c\u662f\u4e2a\u5f88\u7b80\u5355\u7684\u6a21\u578b\uff0c\u4f46\u5f88\u591a\u7b97\u6cd5\u90fd\u53ef\u4ee5\u7528\u8fd9\u4e2a\u6a21\u578b\u63cf\u8ff0\u4e86\u3002<\/p>\n

\u56db HIve\u662f\u4ec0\u4e48\uff1f\u4e3a\u4f55\u4f1a\u6709HIve\uff1f<\/h1>\n

Map+Reduce\u7684\u7b80\u5355\u6a21\u578b\u5f88\u9ec4\u5f88\u66b4\u529b\uff0c\u867d\u7136\u597d\u7528\uff0c\u4f46\u662f\u5f88\u7b28\u91cd\u3002\u7b2c\u4e8c\u4ee3\u7684Tez\u548cSpark\u9664\u4e86\u5185\u5b58Cache\u4e4b\u7c7b\u7684\u65b0feature\uff0c\u672c\u8d28\u4e0a\u6765\u8bf4\uff0c\u662f\u8ba9Map\/Reduce\u6a21\u578b\u66f4\u901a\u7528\uff0c\u8ba9Map\u548cReduce\u4e4b\u95f4\u7684\u754c\u9650\u66f4\u6a21\u7cca\uff0c\u6570\u636e\u4ea4\u6362\u66f4\u7075\u6d3b\uff0c\u66f4\u5c11\u7684\u78c1\u76d8\u8bfb\u5199\uff0c\u4ee5\u4fbf\u66f4\u65b9\u4fbf\u5730\u63cf\u8ff0\u590d\u6742\u7b97\u6cd5\uff0c\u53d6\u5f97\u66f4\u9ad8\u7684\u541e\u5410\u91cf\u3002<\/p>\n

\u6709\u4e86MapReduce\uff0cTez\u548cSpark\u4e4b\u540e\uff0c\u7a0b\u5e8f\u5458\u53d1\u73b0\uff0cMapReduce\u7684\u7a0b\u5e8f\u5199\u8d77\u6765\u771f\u9ebb\u70e6\u3002\u4ed6\u4eec\u5e0c\u671b\u7b80\u5316\u8fd9\u4e2a\u8fc7\u7a0b\u3002\u8fd9\u5c31\u597d\u6bd4\u4f60\u6709\u4e86\u6c47\u7f16\u8bed\u8a00\uff0c\u867d\u7136\u4f60\u51e0\u4e4e\u4ec0\u4e48\u90fd\u80fd\u5e72\u4e86\uff0c\u4f46\u662f\u4f60\u8fd8\u662f\u89c9\u5f97\u7e41\u7410\u3002\u4f60\u5e0c\u671b\u6709\u4e2a\u66f4\u9ad8\u5c42\u66f4\u62bd\u8c61\u7684\u8bed\u8a00\u5c42\u6765\u63cf\u8ff0\u7b97\u6cd5\u548c\u6570\u636e\u5904\u7406\u6d41\u7a0b\u3002\u4e8e\u662f\u5c31\u6709\u4e86Pig\u548cHive\u3002Pig\u662f\u63a5\u8fd1\u811a\u672c\u65b9\u5f0f\u53bb\u63cf\u8ff0MapReduce\uff0cHive\u5219\u7528\u7684\u662fSQL\u3002\u5b83\u4eec\u628a\u811a\u672c\u548cSQL\u8bed\u8a00\u7ffb\u8bd1\u6210MapReduce\u7a0b\u5e8f\uff0c\u4e22\u7ed9\u8ba1\u7b97\u5f15\u64ce\u53bb\u8ba1\u7b97\uff0c\u800c\u4f60\u5c31\u4ece\u7e41\u7410\u7684MapReduce\u7a0b\u5e8f\u4e2d\u89e3\u8131\u51fa\u6765\uff0c\u7528\u66f4\u7b80\u5355\u66f4\u76f4\u89c2\u7684\u8bed\u8a00\u53bb\u5199\u7a0b\u5e8f\u4e86\u3002<\/strong><\/p>\n

\u6709\u4e86Hive\u4e4b\u540e\uff0c\u4eba\u4eec\u53d1\u73b0SQL\u5bf9\u6bd4Java\u6709\u5de8\u5927\u7684\u4f18\u52bf\u3002\u4e00\u4e2a\u662f\u5b83\u592a\u5bb9\u6613\u5199\u4e86\u3002\u521a\u624d\u8bcd\u9891\u7684\u4e1c\u897f\uff0c\u7528SQL\u63cf\u8ff0\u5c31\u53ea\u6709\u4e00\u4e24\u884c\uff0cMapReduce\u5199\u8d77\u6765\u5927\u7ea6\u8981\u51e0\u5341\u4e0a\u767e\u884c\u3002\u800c\u66f4\u91cd\u8981\u7684\u662f\uff0c\u975e\u8ba1\u7b97\u673a\u80cc\u666f\u7684\u7528\u6237\u7ec8\u4e8e\u611f\u53d7\u5230\u4e86\u7231\uff1a\u6211\u4e5f\u4f1a\u5199SQL!\u4e8e\u662f\u6570\u636e\u5206\u6790\u4eba\u5458\u7ec8\u4e8e\u4ece\u4e5e\u6c42\u5de5\u7a0b\u5e08\u5e2e\u5fd9\u7684\u7a98\u5883\u89e3\u8131\u51fa\u6765\uff0c\u5de5\u7a0b\u5e08\u4e5f\u4ece\u5199\u5947\u602a\u7684\u4e00\u6b21\u6027\u7684\u5904\u7406\u7a0b\u5e8f\u4e2d\u89e3\u8131\u51fa\u6765\u3002\u5927\u5bb6\u90fd\u5f00\u5fc3\u4e86\u3002Hive\u9010\u6e10\u6210\u957f\u6210\u4e86\u5927\u6570\u636e\u4ed3\u5e93\u7684\u6838\u5fc3\u7ec4\u4ef6\u3002\u751a\u81f3\u5f88\u591a\u516c\u53f8\u7684\u6d41\u6c34\u7ebf\u4f5c\u4e1a\u96c6\u5b8c\u5168\u662f\u7528SQL\u63cf\u8ff0\uff0c\u56e0\u4e3a\u6613\u5199\u6613\u6539\uff0c\u4e00\u770b\u5c31\u61c2\uff0c\u5bb9\u6613\u7ef4\u62a4\u3002<\/p>\n

\u4e94 MapReduce\u7684\u95ee\u9898\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u81ea\u4ece\u6570\u636e\u5206\u6790\u4eba\u5458\u5f00\u59cb\u7528Hive\u5206\u6790\u6570\u636e\u4e4b\u540e\uff0c\u5b83\u4eec\u53d1\u73b0\uff0cHive\u5728MapReduce\u4e0a\u8dd1\uff0c\u771f\u9e21\u5df4\u6162!<\/strong>\u6d41\u6c34\u7ebf\u4f5c\u4e1a\u96c6\u4e5f\u8bb8\u6ca1\u5565\u5173\u7cfb\uff0c\u6bd4\u598224\u5c0f\u65f6\u66f4\u65b0\u7684\u63a8\u8350\uff0c\u53cd\u6b6324\u5c0f\u65f6\u5185\u8dd1\u5b8c\u5c31\u7b97\u4e86\u3002\u4f46\u662f\u6570\u636e\u5206\u6790\uff0c\u4eba\u4eec\u603b\u662f\u5e0c\u671b\u80fd\u8dd1\u66f4\u5feb\u4e00\u4e9b\u3002\u6bd4\u5982\u6211\u5e0c\u671b\u770b\u8fc7\u53bb\u4e00\u4e2a\u5c0f\u65f6\u5185\u591a\u5c11\u4eba\u5728\u5145\u6c14\u5a03\u5a03\u9875\u9762\u9a7b\u8db3\uff0c\u5206\u522b\u505c\u7559\u4e86\u591a\u4e45\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u5de8\u578b\u7f51\u7ad9\u6d77\u91cf\u6570\u636e\u4e0b\uff0c\u8fd9\u4e2a\u5904\u7406\u8fc7\u7a0b\u4e5f\u8bb8\u8981\u82b1\u51e0\u5341\u5206\u949f\u751a\u81f3\u5f88\u591a\u5c0f\u65f6\u3002\u800c\u8fd9\u4e2a\u5206\u6790\u4e5f\u8bb8\u53ea\u662f\u4f60\u4e07\u91cc\u957f\u5f81\u7684\u7b2c\u4e00\u6b65\uff0c\u4f60\u8fd8\u8981\u770b\u591a\u5c11\u4eba\u6d4f\u89c8\u4e86\u8df3\u86cb\u591a\u5c11\u4eba\u770b\u4e86\u62c9\u8d6b\u66fc\u5c3c\u8bfa\u592b\u7684CD\uff0c\u4ee5\u4fbf\u8ddf\u8001\u677f\u6c47\u62a5\uff0c\u6211\u4eec\u7684\u7528\u6237\u662f\u7325\u7410\u7537\u95f7\u9a9a\u5973\u66f4\u591a\u8fd8\u662f\u6587\u827a\u9752\u5e74\/\u5c11\u5973\u66f4\u591a\u3002\u4f60\u65e0\u6cd5\u5fcd\u53d7\u7b49\u5f85\u7684\u6298\u78e8\uff0c\u53ea\u80fd\u8ddf\u5e05\u5e05\u7684\u5de5\u7a0b\u5e08\u8748\u8748\u8bf4\uff0c\u5feb\uff0c\u5feb\uff0c\u518d\u5feb\u4e00\u70b9!<\/p>\n

\u4e8e\u662fImpala\uff0cPresto\uff0cDrill\u8bde\u751f\u4e86(\u5f53\u7136\u8fd8\u6709\u65e0\u6570\u975e\u8457\u540d\u7684\u4ea4\u4e92SQL\u5f15\u64ce\uff0c\u5c31\u4e0d\u4e00\u4e00\u5217\u4e3e\u4e86)\u3002\u4e09\u4e2a\u7cfb\u7edf\u7684\u6838\u5fc3\u7406\u5ff5\u662f\uff0cMapReduce\u5f15\u64ce\u592a\u6162\uff0c\u56e0\u4e3a\u5b83\u592a\u901a\u7528\uff0c\u592a\u5f3a\u58ee\uff0c\u592a\u4fdd\u5b88<\/strong>\uff0c\u6211\u4eecSQL\u9700\u8981\u66f4\u8f7b\u91cf\uff0c\u66f4\u6fc0\u8fdb\u5730\u83b7\u53d6\u8d44\u6e90\uff0c\u66f4\u4e13\u95e8\u5730\u5bf9SQL\u505a\u4f18\u5316\uff0c\u800c\u4e14\u4e0d\u9700\u8981\u90a3\u4e48\u591a\u5bb9\u9519\u6027\u4fdd\u8bc1(\u56e0\u4e3a\u7cfb\u7edf\u51fa\u9519\u4e86\u5927\u4e0d\u4e86\u91cd\u65b0\u542f\u52a8\u4efb\u52a1\uff0c\u5982\u679c\u6574\u4e2a\u5904\u7406\u65f6\u95f4\u66f4\u77ed\u7684\u8bdd\uff0c\u6bd4\u5982\u51e0\u5206\u949f\u4e4b\u5185)\u3002\u8fd9\u4e9b\u7cfb\u7edf\u8ba9\u7528\u6237\u66f4\u5feb\u901f\u5730\u5904\u7406SQL\u4efb\u52a1\uff0c\u727a\u7272\u4e86\u901a\u7528\u6027\u7a33\u5b9a\u6027\u7b49\u7279\u6027\u3002\u5982\u679c\u8bf4MapReduce\u662f\u5927\u780d\u5200\uff0c\u780d\u5565\u90fd\u4e0d\u6015\uff0c\u90a3\u4e0a\u9762\u4e09\u4e2a\u5c31\u662f\u5254\u9aa8\u5200\uff0c\u7075\u5de7\u950b\u5229\uff0c\u4f46\u662f\u4e0d\u80fd\u641e\u592a\u5927\u592a\u786c\u7684\u4e1c\u897f\u3002<\/p>\n

\u8fd9\u4e9b\u7cfb\u7edf\uff0c\u8bf4\u5b9e\u8bdd\uff0c\u4e00\u76f4\u6ca1\u6709\u8fbe\u5230\u4eba\u4eec\u671f\u671b\u7684\u6d41\u884c\u5ea6\u3002\u56e0\u4e3a\u8fd9\u65f6\u5019\u53c8\u4e24\u4e2a\u5f02\u7c7b\u88ab\u9020\u51fa\u6765\u4e86\u3002\u4ed6\u4eec\u662fHive on Tez \/ Spark\u548cSparkSQL\u3002\u5b83\u4eec\u7684\u8bbe\u8ba1\u7406\u5ff5\u662f\uff0cMapReduce\u6162\uff0c\u4f46\u662f\u5982\u679c\u6211\u7528\u65b0\u4e00\u4ee3\u901a\u7528\u8ba1\u7b97\u5f15\u64ceTez\u6216\u8005Spark\u6765\u8dd1SQL\uff0c\u90a3\u6211\u5c31\u80fd\u8dd1\u7684\u66f4\u5feb<\/strong>\u3002\u800c\u4e14\u7528\u6237\u4e0d\u9700\u8981\u7ef4\u62a4\u4e24\u5957\u7cfb\u7edf\u3002\u8fd9\u5c31\u597d\u6bd4\u5982\u679c\u4f60\u53a8\u623f\u5c0f\uff0c\u4eba\u53c8\u61d2\uff0c\u5bf9\u5403\u7684\u7cbe\u7ec6\u7a0b\u5ea6\u8981\u6c42\u6709\u9650\uff0c\u90a3\u4f60\u53ef\u4ee5\u4e70\u4e2a\u7535\u996d\u7172\uff0c\u80fd\u84b8\u80fd\u7172\u80fd\u70e7\uff0c\u7701\u4e86\u597d\u591a\u53a8\u5177\u3002<\/p>\n

\u4e0a\u9762\u7684\u4ecb\u7ecd\uff0c\u57fa\u672c\u5c31\u662f\u4e00\u4e2a\u6570\u636e\u4ed3\u5e93\u7684\u6784\u67b6\u4e86\u3002\u5e95\u5c42HDFS\uff0c\u4e0a\u9762\u8dd1MapReduce\u6216\u8005Tez\u6216\u8005Spark\uff0c\u5728\u4e0a\u9762\u8dd1Hive\uff0cPig\u3002\u6216\u8005HDFS\u4e0a\u76f4\u63a5\u8dd1Impala\uff0cDrill\uff0cPresto\u3002\u8fd9\u89e3\u51b3\u4e86\u4e2d\u4f4e\u901f\u6570\u636e\u5904\u7406\u7684\u8981\u6c42\u3002<\/p>\n

\u603b\u7ed3\uff1a<\/h2>\n

hdfs\uff1a\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf\uff0c\u4e00\u4e2a\u5927\u6587\u4ef6\u62c6\u5f00\u5206\u522b\u5b58\u653e\u4e0e\u4e0d\u540c\u7684\u4e3b\u673a
\nmap-reduce\uff1a\u542f\u52a8mapreduce\u7a0b\u5e8f\u7528\u6765\u5206\u5e03\u5f0f\u5904\u7406\u5927\u6587\u4ef6\uff0cmap\u662f\u4e3b\u673a\u5206\u5e03\u5f0f\u5e76\u884c\u5904\u7406\uff0creduce\u662f\u6c47\u603b\u7ed3\u679c
\nhive\uff1amap-reduce\u5199\u8d77\u6765\u592a\u96be\u4e86\uff0chive\u63d0\u4f9b\u4e86\u7528sql\u63cf\u8ff0mapreduce\u7684\u529f\u80fd\uff0c
\n\u53ca\uff1asql\u8bed\u53e5—\u300bhive—\u3009mapreduce—\u300bhdfs<\/p>\n

hive\u5c31\u50cf\u662f\u4e00\u4e2asql\u5f15\u64ce\uff0c\u53ef\u4ee5\u628asql\u8f6c\u6362\u4e3amapreduce\u7a0b\u5e8f<\/p>\n

\u4f46\u662fhive\u5728mapreduce\u4e0a\u8dd1\u592a\u6162\u4e86\uff0c\u4e8e\u662f\u6709\u4e86spark\uff0cspark\u6bd4mapreduce\u66f4\u8f7b\u91cf\u7ea7
\n\u6570\u636e\u4ed3\u5e93\u7684\u73b0\u5728\u7684\u67b6\u6784\u53ef\u4ee5\u662f
\nhive—\u300bspark—-\u3009hdfs<\/p>\n

\u516d \u90a3\u5982\u679c\u6211\u8981\u66f4\u9ad8\u901f\u7684\u5904\u7406\u5462\uff1f<\/h1>\n

\u5982\u679c\u6211\u662f\u4e00\u4e2a\u7c7b\u4f3c\u5fae\u535a\u7684\u516c\u53f8\uff0c\u6211\u5e0c\u671b\u663e\u793a\u4e0d\u662f24\u5c0f\u65f6\u70ed\u535a\uff0c\u6211\u60f3\u770b\u4e00\u4e2a\u4e0d\u65ad\u53d8\u5316\u7684\u70ed\u64ad\u699c\uff0c\u66f4\u65b0\u5ef6\u8fdf\u5728\u4e00\u5206\u949f\u4e4b\u5185\uff0c\u4e0a\u9762\u7684\u624b\u6bb5\u90fd\u5c06\u65e0\u6cd5\u80dc\u4efb\u3002\u4e8e\u662f\u53c8\u4e00\u79cd\u8ba1\u7b97\u6a21\u578b\u88ab\u5f00\u53d1\u51fa\u6765\uff0c\u8fd9\u5c31\u662fStreaming(\u6d41)\u8ba1\u7b97\u3002Storm\u662f\u6700\u6d41\u884c\u7684\u6d41\u8ba1\u7b97\u5e73\u53f0<\/strong>\u3002\u6d41\u8ba1\u7b97\u7684\u601d\u8def\u662f\uff0c\u5982\u679c\u8981\u8fbe\u5230\u66f4\u5b9e\u65f6\u7684\u66f4\u65b0\uff0c\u6211\u4f55\u4e0d\u5728\u6570\u636e\u6d41\u8fdb\u6765\u7684\u65f6\u5019\u5c31\u5904\u7406\u4e86?\u6bd4\u5982\u8fd8\u662f\u8bcd\u9891\u7edf\u8ba1\u7684\u4f8b\u5b50\uff0c\u6211\u7684\u6570\u636e\u6d41\u662f\u4e00\u4e2a\u4e00\u4e2a\u7684\u8bcd\uff0c\u6211\u5c31\u8ba9\u4ed6\u4eec\u4e00\u8fb9\u6d41\u8fc7\u6211\u5c31\u4e00\u8fb9\u5f00\u59cb\u7edf\u8ba1\u4e86\u3002<\/p>\n

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