{"id":1679,"date":"2017-07-21T11:44:12","date_gmt":"2017-07-21T03:44:12","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=1679"},"modified":"2017-07-21T11:44:12","modified_gmt":"2017-07-21T03:44:12","slug":"%e5%88%86%e5%b8%83%e5%bc%8f%ef%bc%88zookeeper%ef%bc%89%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=1679","title":{"rendered":"\u5206\u5e03\u5f0f\uff08Zookeeper\uff09\u57fa\u672c\u6982\u5ff5"},"content":{"rendered":"

\n\tZooKeeper<\/a>\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u7684\uff0c\u5f00\u653e\u6e90\u7801\u7684\u5206\u5e03\u5f0f\u5e94\u7528\u7a0b\u5e8f\u534f\u8c03\u670d\u52a1\uff0c\u662fGoogle\u7684Chubby\u4e00\u4e2a\u5f00\u6e90\u7684\u5b9e\u73b0\uff0c\u662fHadoop\u548cHbase\u7684\u91cd\u8981\u7ec4\u4ef6\u3002\u5b83\u662f\u4e00\u4e2a\u4e3a\u5206\u5e03\u5f0f\u5e94\u7528\u63d0\u4f9b\u4e00\u81f4\u6027\u670d\u52a1\u7684\u8f6f\u4ef6\uff0c\u63d0\u4f9b\u7684\u529f\u80fd\u5305\u62ec\uff1a\u914d\u7f6e\u7ef4\u62a4\u3001\u57df\u540d\u670d\u52a1\u3001\u5206\u5e03\u5f0f\u540c\u6b65\u3001\u7ec4\u670d\u52a1\u7b49\u3002
\n\tZooKeeper\u7684\u76ee\u6807\u5c31\u662f\u5c01\u88c5\u597d\u590d\u6742\u6613\u51fa\u9519\u7684\u5173\u952e\u670d\u52a1\uff0c\u5c06\u7b80\u5355\u6613\u7528\u7684\u63a5\u53e3\u548c\u6027\u80fd\u9ad8\u6548\u3001\u529f\u80fd\u7a33\u5b9a\u7684\u7cfb\u7edf\u63d0\u4f9b\u7ed9\u7528\u6237\u3002
\n\tZooKeeper\u5305\u542b\u4e00\u4e2a\u7b80\u5355\u7684\u539f\u8bed\u96c6\uff0c\u63d0\u4f9bJava\u548cC\u7684\u63a5\u53e3\u3002
\n\tZooKeeper\u4ee3\u7801\u7248\u672c\u4e2d\uff0c\u63d0\u4f9b\u4e86\u5206\u5e03\u5f0f\u72ec\u4eab\u9501\u3001\u9009\u4e3e\u3001\u961f\u5217\u7684\u63a5\u53e3\uff0c\u4ee3\u7801\u5728zookeeper-3.4.3\\src\\recipes\u3002\u5176\u4e2d\u5206\u5e03\u9501\u548c\u961f\u5217\u6709Java\u548cC\u4e24\u4e2a\u7248\u672c\uff0c\u9009\u4e3e\u53ea\u6709Java\u7248\u672c\u3002\n<\/p>\n

\n\t\"zookeeper\"\n<\/p>\n

\n\t\u5206\u5e03\u5f0f\u57fa\u672c\u6982\u5ff5
\n<\/h2>\n

\n\t\u5206\u5e03\u5f0f\u67b6\u6784\uff1a\u5728\u96c6\u4e2d\u5f0f\u7684\u7cfb\u7edf\u73af\u5883\u4e2d\uff0c\u53ef\u4ee5\u7b80\u5355\u901a\u8fc7\u4e8b\u52a1(ACID)\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\uff1b\u800c\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u73af\u5883\u4e2d\uff0c\u7531\u4e8e\u7f3a\u5c11\u5168\u5c40\u65f6\u949f\u3001\u6545\u969c\u65e0\u6cd5\u907f\u514d\u7b49\u75db\u70b9\uff0c\u8fc7\u53bb\u7684\u65b9\u5f0f\u4e0d\u5728\u9002\u7528\uff0c\u800c\u9002\u7528\u65b0\u7684CAP\u5b9a\u7406\u548cBASE\u7406\u8bba\u3002
\n\tCAP\u5b9a\u7406
\n\tConsistency\u4e00\u81f4\u6027\uff1a\u6307\u6570\u636e\u5728\u591a\u4e2a\u526f\u672c\u95f4\u662f\u5426\u80fd\u4fdd\u6301\u4e00\u81f4\u7684\u7279\u6027\u3002\u9488\u5bf9\u4e00\u4e2a\u6570\u636e\u9879\u7684\u66f4\u65b0\uff0c\u6240\u6709\u7528\u6237\u90fd\u53ef\u4ee5\u8bfb\u53d6\u5230\u6700\u65b0\u7684\u503c\uff0c\u5219\u7cfb\u7edf\u88ab\u8ba4\u4e3a\u662f\u5f3a\u4e00\u81f4\u7684\u3002
\n\tAvailablity\u53ef\u7528\u6027\uff1a\u6307\u7cfb\u7edf\u4e00\u76f4\u5904\u4e8e\u53ef\u7528\u72b6\u6001\uff0c\u5bf9\u4e8e\u6bcf\u4e00\u4e2a\u8bf7\u6c42\u90fd\u80fd\u5728\u5355\u4f4d\u65f6\u95f4\u5185\u8fd4\u56de\u7ed3\u679c\u3002
\n\tPartition tolerance\u5206\u533a\u5bb9\u9519\u6027\uff1a\u5206\u5e03\u5f0f\u7cfb\u7edf\u5728\u9047\u5230\u4efb\u4f55\u7f51\u7edc\u6545\u969c\u65f6\uff0c\u4ecd\u7136\u53ef\u4ee5\u5bf9\u5916\u63d0\u4f9b\u6ee1\u8db3\u4e00\u81f4\u6027\u548c\u53ef\u7528\u6027\u7684\u670d\u52a1\uff0c\u9664\u975e\u6574\u4e2a\u7f51\u7edc\u90fd\u51fa\u73b0\u6545\u969c\u3002
\n\t\u8be5\u539f\u7406\u6307\u51fa\uff0c\u4e00\u4e2a\u5206\u5e03\u5f0f\u7cfb\u7edf\u65e0\u6cd5\u540c\u65f6\u6ee1\u8db3\u8fd9\u4e09\u4e2a\u57fa\u672c\u9700\u6c42\uff0c\u56e0\u6b64\u9700\u8981\u4f5c\u51fa\u5408\u7406\u7684\u9009\u62e9\u3002\u7531\u4e8eP\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u57fa\u7840\uff0c\u90a3\u4e48\u6838\u5fc3\u5c31\u662f\u5e73\u8861A\u548cC\uff0c\u6700\u5e38\u89c1\u7684\u5c31\u662fBASE\u7406\u8bba\u3002
\n\tBASE\uff1a\u5176\u6838\u5fc3\u601d\u60f3\u662f\u5373\u4f7f\u65e0\u6cd5\u505a\u5230\u5f3a\u4e00\u81f4\u6027\uff0c\u4f46\u6bcf\u4e2a\u5e94\u7528\u90fd\u53ef\u4ee5\u6839\u636e\u81ea\u8eab\u4e1a\u52a1\u7279\u70b9\uff0c
\n\tBasically Available\u57fa\u672c\u53ef\u7528\uff1a\u6307\u5206\u5e03\u5f0f\u7cfb\u7edf\u51fa\u73b0\u4e0d\u53ef\u77e5\u6545\u969c\u65f6\uff0c\u5141\u8bb8\u635f\u5931\u90e8\u5206\u53ef\u7528\u6027\uff0c\u6bd4\u5982\u54cd\u5e94\u65f6\u95f4\u4e0a\u7684\u635f\u5931\u3001\u529f\u80fd\u4e0a\u7684\u635f\u5931\uff08\u670d\u52a1\u964d\u7ea7\uff09\u3002
\n\tSoft state\u8f6f\u72b6\u6001\uff1a\u5141\u8bb8\u7cfb\u7edf\u4e2d\u6570\u636e\u5b58\u5728\u4e2d\u95f4\u72b6\u6001\uff0c\u5373\u5141\u8bb8\u4e0d\u540c\u8282\u70b9\u7684\u6570\u636e\u526f\u672c\u4e4b\u95f4\u8fdb\u884c\u6570\u636e\u540c\u6b65\u65f6\u5b58\u5728\u5ef6\u65f6\u3002
\n\tEventually consistent\u6700\u7ec8\u4e00\u81f4\u6027\uff1a\u9700\u8981\u4fdd\u8bc1\u6700\u7ec8\u6570\u636e\u4fdd\u6301\u4e00\u81f4\uff0c\u800c\u4e0d\u9700\u8981\u5b9e\u65f6\u4fdd\u8bc1\u7cfb\u7edf\u7684\u5f3a\u4e00\u81f4\u6027\u3002\u5728\u5b9e\u8df5\u4e2d\uff0c\u6700\u7ec8\u4e00\u81f4\u6027\u5b58\u57285\u4e2d\u53d8\u79cd\uff0c\u56e0\u679c\u4e00\u81f4\u6027\uff0c\u8bfb\u81ea\u5df1\u4e4b\u6240\u5199\uff0c\u4f1a\u8bdd\u4e00\u81f4\u6027\uff0c\u5355\u8c03\u8bfb\u4e00\u81f4\u6027\u548c\u5355\u8c03\u5199\u4e00\u81f4\u6027\u3002\u6bd4\u5982\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u5e38\u901a\u8fc7\u540c\u6b65\u6216\u4e00\u90e8\u7684\u65b9\u5f0f\u5b9e\u73b0\u4e3b\u5907\u6570\u636e\u590d\u5236\uff0c\u5176\u5b9e\u4e3b\u5907\u4e4b\u95f4\u5c31\u5b58\u5728\u6570\u636e\u4e0d\u4e00\u81f4\uff0c\u4f46\u5176\u901a\u8fc7\u591a\u6b21\u91cd\u8bd5\u6216\u8ba4\u4e3a\u6570\u636e\u4fee\u8ba2\u7b49\u65b9\u5f0f\u4fdd\u8bc1\u4e86\u6570\u636e\u6700\u7ec8\u4e00\u81f4\u6027\uff0c\u7b97\u662f\u4e00\u4e2a\u7ecf\u5178\u6848\u4f8b\u3002
\n\t\u4e00\u81f4\u6027\u534f\u8bae\uff1a\u63d0\u5230\u4e00\u81f4\u6027\u534f\u8bae\uff0c\u6700\u57fa\u7840\u7684\u5c31\u662f2PC\uff08Two-Phase Commit protocol\uff09\u4e24\u9636\u6bb5\u63d0\u4ea4\u534f\u8bae\uff0c\u7edd\u5927\u591a\u6570\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u90fd\u662f\u91c7\u7528\u76842PC\u6765\u5b8c\u6210\u5206\u5e03\u5f0f\u4e8b\u52a1\u5904\u7406\u7684\u3002
\n\t2PC\u7684\u6d41\u7a0b\uff1a\u63d0\u4ea4\u4e8b\u52a1\u9636\u6bb5\uff0c\u5305\u62ec\u4e8b\u52a1\u8be2\u95ee\u3001\u6267\u884c\u4e8b\u52a1\u3001\u5404\u53c2\u4e0e\u8005\u5411\u534f\u8c03\u8005\u53cd\u9988\u4e8b\u52a1\u8be2\u95ee\u7684\u54cd\u5e94\u7b49\u6b65\u9aa4\uff1b\u6267\u884c\u4e8b\u52a1\u9636\u6bb5\uff0c\u5305\u542b\u4e24\u79cd\u60c5\u51b5\uff0c\u6210\u529f\u65f6\u6267\u884c\u4e8b\u52a1\u63d0\u4ea4\uff0c\u5305\u62ec\u53d1\u9001\u63d0\u4ea4\u8bf7\u6c42\u3001\u4e8b\u52a1\u63d0\u4ea4\u3001\u53cd\u9988\u4e8b\u52a1\u63d0\u4ea4\u7ed3\u679c\u3001\u5b8c\u6210\u4e8b\u52a1\u7b49\u6b65\u9aa4\uff0c\u800c\u5931\u8d25\u65f6\u4f1a\u4e2d\u65ad\u4e8b\u52a1\uff0c\u5305\u62ec\u53d1\u9001\u56de\u6eda\u8bf7\u6c42\u3001\u4e8b\u52a1\u56de\u6eda\u3001\u53cd\u9988\u4e8b\u52a1\u56de\u6eda\u7ed3\u679c\u3001\u4e2d\u65ad\u4e8b\u52a1\u7b49\u6b65\u9aa4\u3002\u5176\u4f18\u70b9\u662f\u539f\u7406\u7b80\u5355\u3001\u5b9e\u73b0\u65b9\u4fbf\uff0c\u4f46\u5b58\u5728\u540c\u6b65\u963b\u585e\u3001\u5355\u70b9\u95ee\u9898\u3001\u8111\u88c2\u7b49\u75db\u70b9\u3002\n<\/p>\n

\n\t\"2PC\u7684\u6d41\u7a0b\"\n<\/p>\n

\n\t3PC:\u5176\u5b9e\u5c31\u662f2PC\u7684\u6539\u8fdb\u7248\uff0c\u5c06\u63d0\u4ea4\u4e8b\u52a1\u8bf7\u6c42\u9636\u6bb5\u5206\u6210\u4e86CanCommit,PreCommit\u9636\u6bb5\uff0c\u6700\u540e\u7684DoCommit\u6ca1\u6709\u53d8\u5316\u3002
\n\tPaxos\uff1a\u662fLamport\u4e0e1990\u63d0\u51fa\u7684\u57fa\u4e8e\u6d88\u606f\u4f20\u9012\u4e14\u6709\u9ad8\u5ea6\u5bb9\u9519\u7279\u6027\u7684\u4e00\u81f4\u6027\u7b97\u6cd5\uff0c\u5176\u6210\u529f\u7684\u89e3\u51b3\u4e86“\u62dc\u5360\u5ead\u5c06\u519b”\u95ee\u9898\uff08\u8fd9\u4e2a\u95ee\u9898\u5728\u533a\u5757\u94fe\u4e2d\u4e5f\u6d89\u53ca\uff09\u3002\u5176\u5305\u62ec\u4e09\u79cd\u53c2\u4e0e\u89d2\u8272\uff0c\u5206\u522b\u662fProposer\u3001Acceptor\u548cLearner\uff0c\u8fd9\u513f\u4e0d\u5c55\u5f00\u4ecb\u7ecd\u5176\u57fa\u4e8e\u6570\u636e\u5f52\u7eb3\u6cd5\u7684\u8bc1\u660e\uff08\u4e2a\u4eba\u4e5f\u6ca1\u6253\u7b97\u6df1\u5165\u7814\u7a76\uff09\uff0c\u4f46\u4e00\u4e2a\u91cd\u70b9\u7684\u89c2\u5ff5\u5c31\u662f\uff0c2PC\u662f\u57fa\u4e8e\u6240\u6709\u53c2\u4e0e\u8005\u90fd\u540c\u610f\u7684\u60c5\u51b5\uff0c\u800cPaxos\u662f\u57fa\u4e8e\u8bfb\u4e66\u53c2\u4e0e\u8005\u540c\u610f\u7684\u60c5\u51b5>50%\uff0cgoogle\u7684chubby\u5c31\u662f\u57fa\u4e8e\u8be5\u7b97\u6cd5\u7684\u5b9e\u73b0\u3002<\/p>\n

\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/<\/p>

\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1axttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p>

\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a\u4e1a\u4f59\u8349<\/a>\uff1a » \u5206\u5e03\u5f0f\uff08Zookeeper\uff09\u57fa\u672c\u6982\u5ff5<\/a><\/p>","protected":false},"excerpt":{"rendered":"

ZooKeeper\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u7684\uff0c\u5f00\u653e\u6e90\u7801\u7684\u5206\u5e03\u5f0f\u5e94\u7528\u7a0b\u5e8f\u534f\u8c03\u670d\u52a1\uff0c\u662fGoogle\u7684Chubby\u4e00\u4e2a\u5f00\u6e90\u7684\u5b9e\u73b0 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[761,480,762,79],"class_list":["post-1679","post","type-post","status-publish","format-standard","hentry","category-java","tag-zookeeper","tag-762","tag-79"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1679"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1679\/revisions"}],"predecessor-version":[{"id":1680,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1679\/revisions\/1680"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}