1. \u7b5b\u9009\u5019\u9009\u6587\u4ef6<\/strong><\/p>\n\n\n\n\u9996\u5148\uff0c\u4f7f\u7528OPTIMIZE\u65f6\u9700\u8981\u9650\u5b9a\u8fdb\u884c\u7ec4\u7ec7\u4f18\u5316\u7684\u662f\u54ea\u4e9b\u6587\u4ef6\u3002\u6587\u4ef6\u9009\u62e9\u6709\u4e24\u4e2a\u7b5b\u9009\u539f\u5219\uff1a<\/p>\n\n\n\n
\u53ef\u4ee5\u9009\u62e9\u5168\u8868\u6216\u8005\u5177\u4f53\u7684\u5206\u533a\u6587\u4ef6\u5939\u8fdb\u884c\u7ec4\u7ec7\u4f18\u5316\uff1b<\/p>\n\n\n\n
\u652f\u6301\u591a\u79cd\u7b56\u7565\uff0c\u5982\u4e0a\u9762\u63cf\u8ff0\u7684\u5168\u91cf\u4f18\u5316\u548c\u589e\u91cf\u4f18\u5316\u3002<\/p>\n\n\n\n
2. \u6839\u636e\u591a\u7ef4\u5217\u503c\u751f\u6210z\u5730\u5740<\/strong><\/p>\n\n\n\n\u4f8b\u5982\uff0c\u67d0\u4e00\u884c\u6570\u636e\u4e2d\uff0cfirst_name\u662fThomas\uff0clast_name\u662fMore<\/p>\n\n\n\n
- \u521d\u59cb\u6570\u636e\uff1aThomas, More<\/li>
- \u6570\u5b57\u5316\uff1a68, 102<\/li>
- \u6570\u5b57\u5316\u7684\u8ba1\u7b97\u65b9\u5f0f\uff1a\u5bf9\u8be5\u5217\u4e2d\u7684\u6240\u6709\u6570\u636e\u8fdb\u884c\u91c7\u6837\u7edf\u8ba1\uff0c\u800c\u8fd9\u4e2a\u6570\u636e\u5728\u91c7\u6837\u533a\u95f4\u4e2d\u7684\u4f4d\u7f6e\u7684\u4e0b\u6807\uff0c\u5373\u4e3a\u6570\u5b57\u5316\u5bf9\u5e94\u7684\u503c\u3002<\/li>
- \u4f7f\u75282\u5b57\u8282bits\u8868\u793a\uff1a0000000001000100\uff0c00000000 01100110<\/li>
- \u73b0\u5728\u5206\u4eab\u7684\u662f2\u5b57\u8282\uff0c\u5b9e\u9645\u5b9e\u73b0\u65f6\u5f80\u5f80\u91c7\u7528\u7684\u662f4\u5b57\u8282\u62168\u5b57\u8282\u8fdb\u884c\u5904\u7406\u3002<\/li>
- \u4ea4\u9519\u4f4d\uff08\u8f6c\u5316\u4e00\u7ef4\uff09\uff1a00000000 00000000 00110100 00110100<\/li>
- \u8fd9\u4e2a\u503c\u5c31\u662fz\u5730\u5740\uff0c\u4e5f\u5c31\u662fzOrderAddress\u3002<\/li><\/ul>\n\n\n\n
3. \u6839\u636ez\u5730\u5740\u8fdb\u884cRange\u91cd\u5206\u533a<\/strong><\/p>\n\n\n\n\u6839\u636e\u8ba1\u7b97\u51fa\u6765\u7684zOrderAddress\u8fdb\u884c\u91cd\u65b0\u5206\u533a\u7684\u64cd\u4f5c\uff0c\u5408\u5e76\u5c0f\u6587\u4ef6\uff0c\u4f18\u5316\u6570\u636e\u7ec4\u7ec7\uff0c\u8fd9\u4e2a\u64cd\u4f5c\u7b49\u4ef7\u4e8e<\/p>\n\n\n\n
Dataset.repartitionByRange(ZOrderAddress)<\/p>\n\n\n\n
4. \u4e8b\u52a1\u5199\u56de\u5b58\u50a8<\/strong><\/p>\n\n\n\n\u901a\u8fc7Copy on Write\u7684\u65b9\u5f0f\u5199\u56de\u8868\u4e2d\uff0c\u751f\u6210\u65b0\u7684\u5feb\u7167\u6587\u4ef6\u3002<\/p>\n\n\n\n