{"id":1710,"date":"2020-08-10T17:11:21","date_gmt":"2020-08-10T09:11:21","guid":{"rendered":"https:\/\/wyxxt.org.cn\/?p=1710"},"modified":"2023-12-04T15:45:39","modified_gmt":"2023-12-04T07:45:39","slug":"%e4%b8%80%e8%87%b4%e6%80%a7%e7%ae%97%e6%b3%95paxos","status":"publish","type":"post","link":"https:\/\/wyxxt.org.cn\/?p=1710","title":{"rendered":"\u4e00\u81f4\u6027\u7b97\u6cd5Paxos"},"content":{"rendered":"

\u4ecb\u7ecd<\/h2>\n

\u4e16\u754c\u4e0a\u53ea\u6709\u4e00\u79cd\u4e00\u81f4\u6027\u7b97\u6cd5\uff0c\u5c31\u662fPaxos\u3002\uff08\u89e3\u51b3\u4e00\u81f4\u6027\u7684\u6700\u5e38\u7528\u65b9\u6848\uff09
\n\u57fa\u4e8e\u6d88\u606f\u4f20\u9012<\/strong>\u7684\u4e00\u81f4\u6027\u7b97\u6cd5<\/p>\n

Paxos\u6709\u70b9\u7c7b\u4f3c2PC,3PC,\u4f46\u662f\u89e3\u51b3\u4e86\u8fd9\u4e24\u79cd\u7b97\u6cd5\u7684\u786c\u4f24\u3002\u8be5\u7b97\u6cd5\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u7684\u5730\u4f4d\uff0c\u751a\u81f3Paxos\u5c31\u662f\u5206\u5e03\u5f0f\u4e00\u81f4\u6027<\/strong>\u7684\u4ee3\u540d\u8bcd\u3002<\/p>\n

\u4ec0\u4e48\u662fPaxos\u7b97\u6cd5<\/h2>\n

Paxos\u7b97\u6cd5\u662f\u57fa\u4e8e\u6d88\u606f\u4f20\u9012<\/strong>\u4e14\u5177\u6709\u9ad8\u6548\u5bb9\u9519\u7279\u6027<\/strong>\u7684\u4e00\u81f4\u6027\u7b97\u6cd5\uff0c\u76ee\u524d\u516c\u8ba4\u7684\u89e3\u51b3\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u95ee\u9898\u7684\u6700\u6709\u6548\u7b97\u6cd5\u4e4b\u4e00\u3002<\/p>\n

Paxos\u7b97\u6cd5\u4ea7\u751f\u80cc\u666f<\/h2>\n

1. \u62dc\u5360\u5ead\u5c06\u519b\u95ee\u9898<\/h3>\n

\u62dc\u5360\u5ead\u662f\u53e4\u4ee3\u4e1c\u7f57\u9a6c\u5e1d\u56fd\u7684\u9996\u90fd\uff0c\u7531\u4e8e\u5730\u57df\u5bbd\u5e7f\uff0c\u5b88\u536b\u8fb9\u5883\u7684\u591a\u4e2a\u5c06\u519b\uff08\u7cfb\u7edf\u4e2d\u7684\u591a\u4e2a\u8282\u70b9\uff09\u9700\u8981\u901a\u8fc7\u4fe1\u4f7f\u6765\u4f20\u9012\u6d88\u606f\uff0c\u8fbe\u6210\u67d0\u4e9b\u4e00\u81f4\u7684\u51b3\u5b9a\u3002\u4f46\u7531\u4e8e\u4fe1\u4f7f\u4e2d\u53ef\u80fd\u5b58\u5728\u53db\u5f92\uff08\u7cfb\u7edf\u4e2d\u8282\u70b9\u51fa\u9519\uff09\uff0c\u8fd9\u4e9b\u53db\u5f92\u5c06\u52aa\u529b\u5411\u4e0d\u540c\u7684\u5c06\u519b\u53d1\u9001\u4e0d\u540c\u7684\u6d88\u606f\uff0c\u8bd5\u56fe\u4f1a\u5e72\u6270\u4e00\u81f4\u6027\u7684\u8fbe\u6210\u3002<\/p>\n

2. Paxos\u7b97\u6cd5\u7531\u6765<\/h3>\n

\u6545\u4e8b\u80cc\u666f\u662f\u53e4\u5e0c\u814a Paxos \u5c9b\u4e0a\u7684\u591a\u4e2a\u6cd5\u5b98\u5728\u4e00\u4e2a\u5927\u5385\u5185\u5bf9\u4e00\u4e2a\u8bae\u6848\u8fdb\u884c\u8868\u51b3\uff0c\u5982\u4f55\u8fbe\u6210\u7edf\u4e00\u7684\u7ed3\u679c\u3002\u4ed6\u4eec\u4e4b\u95f4\u901a\u8fc7\u670d\u52a1\u4eba\u5458\u6765\u4f20\u9012\u7eb8\u6761\uff0c\u4f46\u6cd5\u5b98\u53ef\u80fd\u79bb\u5f00\u6216\u8fdb\u5165\u5927\u5385\uff0c\u670d\u52a1\u4eba\u5458\u53ef\u80fd\u5077\u61d2\u53bb\u7761\u89c9\u3002<\/p>\n

3. \u4ea7\u751f\u80cc\u666f<\/h3>\n

\u5728\u5e38\u89c1\u7684 \u5206\u5e03\u5f0f\u7cfb\u7edf \u4e2d\uff0c\u603b\u4f1a\u53d1\u751f \u8282\u70b9\u5b95\u673a \u6216 \u7f51\u7edc\u5f02\u5e38 (\u5305\u62ec\u6d88\u606f\u7684 \u91cd\u590d\u3001\u4e22\u5931\u3001\u5ef6\u8fdf\u3001\u4e71\u5e8f\u3001\u7f51\u7edc\u5206\u533a) \u7b49\u60c5\u51b5\u3002
\nPaxos \u7b97\u6cd5\u4e3b\u8981\u5c31\u662f\u89e3\u51b3\u5982\u4f55\u5728\u4e00\u4e2a \u53d1\u751f\u5982\u4e0a\u6545\u969c \u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u5feb\u901f\u6b63\u786e\u7684\u5728\u96c6\u7fa4\u5185 \u5bf9\u67d0\u4e2a\u503c\u8fbe\u6210\u4e00\u81f4\uff0c\u5e76\u4e14\u4fdd\u8bc1 \u6574\u4e2a\u7cfb\u7edf\u7684\u4e00\u81f4\u6027\u3002<\/p>\n

\"\"<\/p>\n

\u7b97\u6cd5\u8be6\u89e3<\/h2>\n

1. \u89d2\u8272&\u63d0\u6848<\/h3>\n

\u63d0\u6848\uff08Proposal\uff09<\/p>\n

\u63d0\u6848\u7684\u8303\u56f4>value [\u63d0\u6848=\u7f16\u53f7+value]\uff0c\u4e5f\u53ef\u4ee5\u8868\u793a\u4e3a[M,V]\u3002\u4ee5\u4e0b\u63cf\u8ff0\u4e2d\u6682\u5b9a\uff1a\u63d0\u6848=P\uff0cValue=V\n<\/code><\/pre>\n
\u89d2\u8272<\/p>\n
    \n
  • Proposer\uff1a ProPoser\u53ef\u4ee5\u63d0\u51fa\u63d0\u6848\uff08Proposal\uff09<\/p>\n<\/li>\n
  • \n
    Accecptor\uff1a Acceptor\u53ef\u4ee5\u63a5\u53d7\u63d0\u6848\u3002\u4e00\u65e6\u63a5\u53d7\u63d0\u6848\uff0c\u63d0\u6848\u91cc\u9762\u7684value\u503c\u5c31\u88ab\u9009\u5b9a\u4e86<\/p>\n<\/li>\n
  • \n
    Learner\uff1a Acceptor\u544a\u8bc9Learner\u54ea\u4e2a\u63d0\u6848\u522b\u9009\u5b9a\u4e86\uff0c\u90a3\u4e48Learner\u5c31\u5b66\u4e60\u8fd9\u4e2a\u88ab\u9009\u62e9\u7684value<\/p>\n<\/li>\n<\/ul>\n
    \"\"<\/p>\n
    \u5728\u5177\u4f53\u7684\u5b9e\u73b0\u4e2d\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u53ca\u53ef\u80fd\u662fProposer\uff0c\u4e5f\u53ef\u80fd\u662fAcceptor\uff0c\u4e5f\u53ef\u80fd\u662fLearner\n<\/code><\/pre>\n
    2. \u95ee\u9898\u63cf\u8ff0<\/h3>\n
    Paxos\u7b97\u6cd5\u7684\u6838\u5fc3\u662f\u4e00\u81f4\u6027<\/strong>\u3002\u6240\u4ee5\u5c06\u4ece\u4e00\u81f4\u6027\u95ee\u9898\u7684\u63cf\u8ff0\u6765\u8bb2\u89e3\u8be5\u7b97\u6cd5\u600e\u4e48\u89e3\u51b3\u5b9e\u9645\u95ee\u9898<\/p>\n
      \n
    • \u4e00\u81f4\u6027\u7b97\u6cd5\u7684\u524d\u7f6e\u6761\u4ef6<\/li>\n<\/ul>\n
      \u5728\u88ab\u63d0\u51fa\u7684P\u4e2d\uff0c\u53ea\u6709\u4e00\u4e2aV\u88ab\u9009\u4e2d<\/p>\n
      \u5982\u679c\u6ca1\u6709P\u88ab\u63d0\u51fa\uff0c\u5c31\u6ca1\u6709V\u88ab\u9009\u4e2d<\/p>\n
      \u5728P\u88ab\u9009\u5b9a\u540e\uff0c\u8fdb\u7a0b\u90fd\u53ef\u4ee5\u5b66\u4e60\u88ab\u9009\u4e2d\u7684P<\/p>\n
        \n
      • \u4e0d\u540c\u89d2\u8272\u901a\u8fc7\u53d1\u9001\u6d88\u606f\u8fdb\u884c\u901a\u4fe1<\/li>\n<\/ul>\n
        \u6bcf\u4e2a\u89d2\u8272\u4ee5\u4efb\u610f\u7684\u901f\u5ea6\u6267\u884c\uff0c\u53ef\u80fd\u56e0\u51fa\u9519\u800c\u505c\u6b62\uff0c\u4e5f\u53ef\u80fd\u4f1a\u91cd\u542f\u3002\u4e00\u4e2a value \u88ab\u9009\u5b9a\u540e\uff0c\u6240\u6709\u7684\u89d2\u8272\u53ef\u80fd\u5931\u8d25\u7136\u540e\u91cd\u542f\uff0c\u9664\u975e\u90a3\u4e9b\u5931\u8d25\u540e\u91cd\u542f\u7684\u89d2\u8272\u80fd\u8bb0\u5f55\u67d0\u4e9b\u4fe1\u606f\uff0c\u5426\u5219\u7b49\u4ed6\u4eec\u91cd\u542f\u540e\u65e0\u6cd5\u786e\u5b9a\u88ab\u9009\u5b9a\u7684\u503c\u3002<\/p>\n
        \u6d88\u606f\u5728\u4f20\u9012\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u51fa\u73b0 \u4efb\u610f\u65f6\u957f\u7684\u5ef6\u8fdf\uff0c\u53ef\u80fd\u4f1a \u91cd\u590d\uff0c\u4e5f\u53ef\u80fd \u4e22\u5931\uff0c\u4f46\u662f\u6d88\u606f\u4e0d\u4f1a\u88ab \u635f\u574f\u3002<\/p>\n
        3. \u63a8\u5bfc\u8fc7\u7a0b<\/h3>\n
          \n
        • \u53ea\u6709\u4e00\u4e2aAcceptor<\/li>\n<\/ul>\n
          \"\"<\/p>\n
          \u4e00\u4e2aAcceport\u63a5\u53d7\u4e00\u4e2aP\uff0c\u90a3\u4e48\u53ea\u6709\u4e00\u4e2aV\u88ab\u9009\u5b9a<\/p>\n
          \u5982\u679c\u8fd9\u4e2aAcceprot\u5b95\u673a\uff0c\u90a3\u4e48\u6574\u4e2a\u7cfb\u7edf\u670d\u52a1\u5c06\u4e0d\u53ef\u7528\n<\/code><\/pre>\n
            \n
          • \u591a\u4e2aAcceptor<\/li>\n<\/ul>\n
            \u591a\u4e2aAcceptors\u5982\u4f55\u9009\u5b9a\u4e00\u4e2a\u503c<\/p>\n
            \"\"<\/p>\n
            \u5982\u4f55\u5728\u591a\u4e2aProposer\u548c\u591a\u4e2aAcceptor\u60c5\u51b5\u4e0b\uff0c\u9009\u5b9a\u4e00\u4e2aValue\uff1f\n<\/code><\/pre>\n
            \u5206\u4e24\u4e2a\u9636\u6bb5\uff1a\u7ea6\u5b9aP1<\/strong>\u548c\u7ea6\u5b9aP2<\/strong><\/p>\n
            \u7ea6\u5b9aP1<\/strong><\/p>\n
            \u4e00\u4e2aAcceptor\u5fc5\u987b\u63a5\u53d7\u4e00\u4e2a\u5b83\u6536\u5230\u7684\u7b2c\u4e00\u4e2aP\n<\/code><\/pre>\n
            \u5982\u679c\u6bcf\u4e2aProposer\u4f1a\u4ea7\u751f\u4e0d\u540c\u7684P\uff0c\u90a3\u4e48\u591a\u4e2aProposer\u5fc5\u5b9a\u4ea7\u751f\u591a\u4e2aP\uff0c\u53d1\u7ed9\u591a\u4e2aAcceptor\u3002<\/p>\n
            \u6839\u636e\u7ea6\u5b9aP1<\/strong>\uff0cAcceptor\u5206\u522b\u63a5\u53d7\u5230P\uff0c\u5c31\u4f1a\u5bfc\u81f4\u4e0d\u540c\u7684V\u88ab\u9009\u5b9a\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n
            \"\"<\/p>\n
            \u5982\u4e0a\u56fe\u6240\u793a\uff0cP1\u4f1a\u4ea7\u751f\u95ee\u9898\uff1av1\u3001v2\u3001v3\u90fd\u6ca1\u6709\u88ab\u9009\u5b9a\uff0c\u56e0\u4e3a\u4ed6\u4eec\u53ea\u6709\u4e00\u4e2aAcceptor\u63a5\u53d7<\/p>\n
            \u5bf9\u4e8e\u4e0a\u8ff0\u95ee\u9898\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u989d\u5916\u7684\u7ea6\u5b9a\uff1a<\/p>\n
            P1a\uff1a\u4e00\u4e2a\u63d0\u6848P\u88ab\u9009\u5b9a\uff0c\u9700\u8981\u534a\u6570\u4ee5\u4e0aAcceptor\u63a5\u53d7\n<\/code><\/pre>\n
            \u663e\u7136\u8fd9\u4e0eP1\u60f3\u77db\u76fe\uff0c\u6240\u4ee5\u9700\u8981\u91cd\u65b0\u8bbe\u8ba1\u63d0\u6848\u3002\u539f\u6765\u7684\u8bbe\u8ba1\u662f\uff1a[\u63d0\u6848P=Value],\u73b0\u5728\u91cd\u65b0\u8bbe\u8ba1[P=\u63d0\u6848\u7f16\u53f7+value]\uff0c\u53ef\u8868\u793a\u4e3a[M,V]<\/p>\n
            \u65b0\u95ee\u9898\uff1a\u591a\u4e2a\u63d0\u6848\u88ab\u9009\u5b9a\uff0c\u5982\u4f55\u4fdd\u8bc1\u88ab\u9009\u5b9a\u7684P\u5177\u6709\u76f8\u540c\u7684value\n<\/code><\/pre>\n
            \u7ea6\u5b9aP2<\/strong><\/p>\n
            \u5982\u679c\u63d0\u6848P[M0,V0]\u88ab\u9009\u5b9a\u4e86\uff0c\u90a3\u4e48\u6240\u6709\u6bd4M0\u7f16\u53f7\u66f4\u9ad8\u7684\u4e14\u88ab\u9009\u5b9a\u7684P\uff0c\u5176Value\u7684\u503c\u4e5f\u662fV0\n<\/code><\/pre>\n
            \u5bf9\u4e8eP2\u4e2d\u7684\u201c\u88ab\u9009\u5b9a\u201d\uff1a\u4e00\u4e2a\u63d0\u6848\u8981\u88ab\u9009\u5b9a\uff0c\u9996\u5148\u81f3\u5c11\u8981\u88ab\u4e00\u4e2aAcceptor\u6279\u51c6\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u7406\u89e3P2\u4e3a\uff1a<\/p>\n
            P2a\uff1a\u5982\u679c\u63d0\u6848P[M0,V0]\u88ab\u9009\u5b9a\uff0c\u90a3\u4e48\u6240\u6709\u6bd4M0\u7f16\u53f7\u66f4\u9ad8\u7684\uff0c\u4e14[\u88abAcceptor\u6279\u51c6]\u7684P\uff0c\u5176value\u503c\u4e5f\u662fV0\n<\/code><\/pre>\n
            \u53ea\u8981\u6ee1\u8db3P2a<\/strong>,\u5c31\u80fd\u6ee1\u8db3P2<\/strong>.\u591a\u63d0\u6848\u88ab\u9009\u62e9<\/strong>\u7684\u95ee\u9898\u89e3\u51b3\u4e86\uff0c\u4f46\u662f\u7531\u4e8e\u7f51\u7edc\u4e0d\u7a33\u5b9a\u6216\u8005\u5b95\u673a\u7684\u539f\u56e0\uff08\u4e0d\u53ef\u907f\u514d\uff09\uff0c\u4f1a\u4ea7\u751f\u65b0\u95ee\u9898<\/p>\n
            \"\"<\/p>\n
            \u5047\u8bbe\u6709 5 \u4e2a Acceptor\u3002Proposer2 \u63d0\u51fa [M1,V1]\u7684\u63d0\u6848\uff0cAcceptor2~5\uff08\u534a\u6570\u4ee5\u4e0a\uff09\u5747\u63a5\u53d7\u4e86\u8be5\u63d0\u6848\uff0c\u4e8e\u662f\u5bf9\u4e8e Acceptor2~5 \u548c Proposer2 \u6765\u8bb2\uff0c\u5b83\u4eec\u90fd\u8ba4\u4e3a V1 \u88ab\u9009\u5b9a\u3002Acceptor1 \u521a\u521a\u4ece \u5b95\u673a\u72b6\u6001 \u6062\u590d\u8fc7\u6765\uff08\u4e4b\u524d Acceptor1 \u6ca1\u6709\u6536\u5230\u8fc7\u4efb\u4f55\u63d0\u6848\uff09\uff0c\u6b64\u65f6 Proposer1 \u5411 Acceptor1 \u53d1\u9001\u4e86 [M2,V2] \u7684\u63d0\u6848 \uff08V2\u2260V1\u4e14M2>M1\uff09\u3002\u5bf9\u4e8e Acceptor1 \u6765\u8bb2\uff0c\u8fd9\u662f\u5b83\u6536\u5230\u7684 \u7b2c\u4e00\u4e2a\u63d0\u6848\u3002\u6839\u636e P1\uff08\u4e00\u4e2a Acceptor \u5fc5\u987b\u63a5\u53d7\u5b83\u6536\u5230\u7684 \u7b2c\u4e00\u4e2a\u63d0\u6848\uff09\uff0cAcceptor1 \u5fc5\u987b\u63a5\u53d7\u8be5\u63d0\u6848\u3002\u540c\u65f6 Acceptor1 \u8ba4\u4e3a V2 \u88ab\u9009\u5b9a\u3002<\/p>\n
            \u8fd9\u5c31\u51fa\u73b0\u4e86\u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n
              \n
            • Acceptor1 \u8ba4\u4e3a V2 \u88ab\u9009\u5b9a\uff0cAcceptor2~5 \u548cProposer2 \u8ba4\u4e3a V1 \u88ab\u9009\u5b9a\u3002\u51fa\u73b0\u4e86\u4e0d\u4e00\u81f4\u3002\n
                \n
              • V1 \u88ab\u9009\u5b9a\u4e86\uff0c\u4f46\u662f \u7f16\u53f7\u66f4\u9ad8 \u7684\u88ab Acceptor1 \u63a5\u53d7\u7684\u63d0\u6848 [M2,V2] \u7684 value \u4e3a V2\uff0c\u4e14 V2\u2260V1\u3002\u8fd9\u5c31\u8ddf P2a\uff08\u5982\u679c\u67d0\u4e2a value \u4e3a v\u7684\u63d0\u6848\u88ab\u9009\u5b9a\u4e86\uff0c\u90a3\u4e48\u6bcf\u4e2a \u7f16\u53f7\u66f4\u9ad8 \u7684\u88ab Acceptor \u63a5\u53d7\u7684\u63d0\u6848\u7684 value \u5fc5\u987b\u4e5f\u662f v\uff09\u77db\u76fe\u4e86\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                \u57fa\u4e8e\u4ee5\u4e0a\u95ee\u9898\uff0c\u6240\u6709\u5c31\u6709\u4e86 P2b\uff1a<\/p>\n
                P2b\uff1a\u5982\u679cP[M0,V0]\u88ab\u9009\u5b9a\u540e\uff0c\u4efb\u4f55Proposer\u4ea7\u751f\u7684P\uff0c\u5176\u503c\u4e5f\u662fV0\n<\/code><\/pre>\n
                \u5bf9\u4e8eP2b<\/strong>\u4e2d\u7684\u63cf\u8ff0\uff0c\u600e\u6837\u4fdd\u8bc1\u4efb\u4f55Proposer\u4ea7\u751f\u7684P\uff0c\u5176\u503c\u4e5f\u662fV0\uff1f\u53ea\u8981\u6ee1\u8db3P2c<\/strong>\u5373\u53ef\uff1a<\/p>\n
                P2c: \u5bf9\u4e8e\u4efb\u610f\u7684 M\u3001V\uff0c\u5982\u679c [M,V] \u88ab\u63d0\u51fa\uff0c\u90a3\u4e48\u5b58\u5728\u4e00\u4e2a\u534a\u6570\u4ee5\u4e0a\u7684 Acceptor \u7ec4\u6210\u7684\u7ec4\u5408 S\uff0c\u6ee1\u8db3\u4ee5\u4e0b\u4e24\u4e2a\u6761\u4ef6\u4e2d\u7684\u4efb\u4f55\u4e00\u4e2a\uff1a\n<\/code><\/pre>\n
                \u2460 S \u4e2d\u6ca1\u6709\u4e00\u4e2a\u63a5\u53d7\u8fc7\u7f16\u53f7\u5c0f\u4e8e M \u7684\u63d0\u6848\u3002
                \n\u2461 S \u4e2d\u7684 Acceptor \u63a5\u53d7\u8fc7\u7684\u6700\u5927\u7f16\u53f7\u7684\u63d0\u6848\u7684 value \u4e3a V\u3002<\/p>\n
                4. \u7b97\u6cd5\u6d41\u7a0b<\/h3>\n
                Proposer\u63d0\u51fa\u63d0\u6848<\/strong><\/h5>\n
                \u5b66\u4e60\u9636\u6bb5\uff1aPrepare\u8bf7\u6c42<\/p>\n
                Proposer\u9009\u62e9\u4e00\u4e2a\u65b0\u7684\u63d0\u6848P[MN,?]\u5411Acceptor\u96c6\u5408S\uff08\u6570\u76ee\u5728\u534a\u6570\u4ee5\u4e0a\uff09\u53d1\u9001\u8bf7\u6c42\uff0c\u8981\u6c42S\u4e2d\u7684\u6bcf\u4e00\u4e2aAcceptor\u4f5c\u51fa\u5982\u4e0b\u54cd\u5e94\uff1a<\/p>\n
                1. \u5982\u679cAcceptor\u6ca1\u6709\u63a5\u53d7\u8fc7\u63d0\u6848\uff0c\u5219\u5411Proposer\u4fdd\u8bc1\u4e0d\u518d\u63a5\u53d7\u7f16\u53f7\u5c0f\u4e8eN\u7684\u63d0\u6848\n2. \u5982\u679cAcceptor\u63a5\u53d7\u8fc7\u8bf7\u6c42\uff0c\u5219\u5411Proposer\u7ffb\u8bd1\u5df2\u7ecf\u63a5\u53d7\u8fc7\u7684\u7f16\u53f7\u5c0f\u4e8eN\u7684\u7f16\u53f7\u6700\u5927\u7684\u63d0\u6848\n<\/code><\/pre>\n
                \u63a5\u53d7\u9636\u6bb5\uff1aAcceptor\u8bf7\u6c42<\/p>\n
                1.\u5982\u679cProposer\u6536\u5230\u534a\u6570\u4ee5\u4e0a\u7684Acceptor\u54cd\u5e94\uff0c\u5219\u751f\u6210\u7f16\u53f7\u4e3aN\uff0cvalue\u4e3aV\u7684\u63d0\u6848[MN,V],V\u4e3a\u6240\u6709\u54cd\u5e94\u4e2d\u7f16\u53f7\u6700\u5927\u7684\u63d0\u6848value\n2. \u5982\u679cProposer\u6536\u5230\u7684\u54cd\u5e94\u4e2d\u6ca1\u6709\u63d0\u6848\uff0c\u90a3\u4e48value\u7531Proposer\u81ea\u5df1\u751f\u6210\uff0c\u751f\u6210\u540e\u5c06\u6b64\u63d0\u6848\u53d1\u7ed9S\uff0c\u5e76\u671f\u671bAcceptor\u80fd\u63a5\u53d7\u6b21\u63d0\u6848\n<\/code><\/pre>\n
                Acceptor\u63a5\u53d7\u63d0\u6848<\/strong><\/h5>\n
                Acceptor\u53ef\u4ee5\u5ffd\u7565\u4efb\u4f55\u8bf7\u6c42\uff08\u5305\u62ecPrepare\u8bf7\u6c42\u548cAccept\u8bf7\u6c42\uff09\u800c\u4e0d\u7528\u62c5\u5fc3\u7834\u574f\u7b97\u6cd5\u7684\u5b89\u5168\u6027\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u8fd9\u91cc\u8981\u8ba8\u8bba\u7684\u662f\u4ec0\u4e48\u65f6\u5019Acceptor\u53ef\u4ee5\u54cd\u5e94\u4e00\u4e2a\u8bf7\u6c42<\/p>\n
                \u5bf9Acceptor\u63a5\u53d7\u63d0\u6848\u7ed9\u51fa\u5982\u4e0b\u7ea6\u675f\uff1a<\/p>\n
                P1b\uff1a\u4e00\u4e2a Acceptor \u53ea\u8981\u5c1a\u672a\u54cd\u5e94\u8fc7\u4efb\u4f55\u7f16\u53f7\u5927\u4e8e N \u7684 Prepare \u8bf7\u6c42\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u63a5\u53d7\u8fd9\u4e2a\u7f16\u53f7\u4e3a N \u7684\u63d0\u6848\u3002\n<\/code><\/pre>\n
                \u5982\u679c Acceptor \u6536\u5230\u4e00\u4e2a\u7f16\u53f7\u4e3a N \u7684 Prepare \u8bf7\u6c42\uff0c\u5728\u6b64\u4e4b\u524d\u5b83\u5df2\u7ecf \u54cd\u5e94\u8fc7 \u7f16\u53f7\u5927\u4e8e N \u7684 Prepare \u8bf7\u6c42\u3002\u6839\u636e P1b\uff0c\u8be5 Acceptor \u4e0d\u53ef\u80fd\u63a5\u53d7\u7f16\u53f7\u4e3a N \u7684\u63d0\u6848\u3002\u56e0\u6b64\uff0c\u8be5 Acceptor \u53ef\u4ee5 \u5ffd\u7565 \u7f16\u53f7\u4e3a N \u7684 Prepare \u8bf7\u6c42\u3002\u5f53\u7136\uff0c\u4e5f\u53ef\u4ee5\u56de\u590d\u4e00\u4e2a error\uff0c\u8ba9 Proposer \u5c3d\u65e9\u77e5\u9053\u81ea\u5df1\u7684\u63d0\u6848 \u4e0d\u4f1a\u88ab\u63a5\u53d7\u3002<\/p>\n
                \u56e0\u6b64\uff0c\u4e00\u4e2aAcceptor\u53ea\u9700\u8bb0\u4f4f\uff1a<\/p>\n
                  \n
                1. \u5df2\u63a5\u53d7\u7684\u7f16\u53f7\u6700\u5927\u7684\u63d0\u6848<\/p>\n<\/li>\n
                2. \n
                  \u5df2\u54cd\u5e94\u7684\u8bf7\u6c42\u6700\u5927\u7f16\u53f7<\/p>\n<\/li>\n<\/ol>\n
                  \"\"<\/p>\n
                  Paxos\u7b97\u6cd5\u63cf\u8ff0<\/h2>\n
                  \"\"<\/p>\n
                  Learner\u5b66\u4e60\u63d0\u6848<\/h2>\n
                  Learner \u5b66\u4e60\uff08\u83b7\u53d6\uff09\u88ab\u9009\u5b9a\u7684 value \u6709\u5982\u4e0b\u4e09\u79cd\u65b9\u6848:<\/p>\n
                  \"\"<\/p>\n
                  \u5982\u4f55\u4fdd\u8bc1Paxos\u7b97\u6cd5\u7684\u6d3b\u6027<\/h2>\n
                  \u901a\u8fc7\u9009\u4e3e\u4e3bProposer\u4fdd\u8bc1\u7b97\u6cd5\u7684\u6d3b\u6027<\/p>\n
                  \"\"<\/p>\n
                  \u9009\u53d6\u4e00\u4e2a\u4e3bProposer\uff0c\u53ea\u6709\u4e3bProposer\u624d\u80fd\u63d0\u51fa\u63d0\u6848<\/p>\n
                  \u5c0f\u7ed3<\/h2>\n
                  Paxos \u5728 \u8282\u70b9\u5b95\u673a\u6062\u590d\u3001\u6d88\u606f\u65e0\u5e8f\u6216\u4e22\u5931\u3001\u7f51\u7edc\u5206\u5316 \u7684\u573a\u666f\u4e0b\u80fd\u4fdd\u8bc1 \u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u800c Paxos \u7684\u63cf\u8ff0\u4fa7\u91cd\u4e8e \u7406\u8bba\uff0c\u5728\u5b9e\u9645\u9879\u76ee\u5e94\u7528\u4e2d\uff0c\u5904\u7406\u4e86 N \u591a\u5b9e\u9645\u7ec6\u8282\u540e\uff0c\u53ef\u80fd\u5df2\u7ecf\u53d8\u6210\u4e86\u53e6\u5916\u4e00\u79cd\u7b97\u6cd5\uff0c\u8fd9\u65f6\u5019\u6b63\u786e\u6027\u5df2\u7ecf\u65e0\u6cd5\u5f97\u5230\u7406\u8bba\u7684\u4fdd\u8bc1\u3002
                  \n\u8981\u8bc1\u660e\u5206\u5e03\u5f0f\u4e00\u81f4\u6027\u7b97\u6cd5\u7684\u6b63\u786e\u6027\u901a\u5e38\u6bd4\u5b9e\u73b0\u7b97\u6cd5\u8fd8\u56f0\u96be\u3002\u6240\u4ee5\u5f88\u591a\u7cfb\u7edf\u5b9e\u9645\u4e2d\u4f7f\u7528\u7684\u90fd\u662f\u4ee5 Paxos \u7406\u8bba \u4e3a\u57fa\u7840\u800c \u884d\u751f \u51fa\u6765\u7684\u53d8\u79cd\u548c\u7b80\u5316\u7248\u3002\u4f8b\u5982 Google \u7684 Chubby\u3001MegaStore\u3001Spanner \u7b49\u7cfb\u7edf\uff0cZooKeeper \u7684 ZAB \u534f\u8bae\uff0c\u8fd8\u6709\u66f4\u52a0\u5bb9\u6613\u7406\u89e3\u7684 Raft \u534f\u8bae\u3002
                  \n\u5927\u90e8\u5206\u7cfb\u7edf\u90fd\u662f\u9760\u5728\u5b9e\u8df5\u4e2d\u8fd0\u884c\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4\uff0c\u7ecf\u8fc7\u9a8c\u8bc1\u53d1\u73b0\u7cfb\u7edf\u5df2\u53ef\u4ee5\u57fa\u672c\u8fd0\u884c\uff0c\u6ca1\u6709\u53d1\u73b0\u5927\u7684\u95ee\u9898\u624d\u80fd\u4e0a\u751f\u4ea7\u73af\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                  \u4ecb\u7ecd \u4e16\u754c\u4e0a\u53ea\u6709\u4e00\u79cd\u4e00\u81f4\u6027\u7b97\u6cd5\uff0c\u5c31\u662fPaxos\u3002\uff08\u89e3\u51b3\u4e00\u81f4\u6027\u7684\u6700\u5e38\u7528\u65b9\u6848\uff09 \u57fa\u4e8e\u6d88\u606f\u4f20\u9012\u7684\u4e00\u81f4\u6027\u7b97\u6cd5 Paxo […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[15],"tags":[403],"class_list":["post-1710","post","type-post","status-publish","format-standard","hentry","category-15","tag-403"],"_links":{"self":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/1710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1710"}],"version-history":[{"count":14,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/1710\/revisions"}],"predecessor-version":[{"id":3661,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/1710\/revisions\/3661"}],"wp:attachment":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}