{"id":156654,"date":"2020-09-17T11:47:19","date_gmt":"2020-09-17T03:47:19","guid":{"rendered":"http:\/\/4563.org\/?p=156654"},"modified":"2020-09-17T11:47:19","modified_gmt":"2020-09-17T03:47:19","slug":"%e4%bb%8e-neo4j-%e5%af%bc%e5%85%a5-nebula-graph-%e5%ae%9e%e8%b7%b5%e8%a7%81-spark-%e6%95%b0%e6%8d%ae%e5%af%bc%e5%85%a5%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=156654","title":{"rendered":"\u4ece Neo4j \u5bfc\u5165 Nebula Graph \u5b9e\u8df5\u89c1 SPark \u6570\u636e\u5bfc\u5165\u539f\u7406"},"content":{"rendered":"
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\u4ece Neo4j \u5bfc\u5165 Nebula Graph \u5b9e\u8df5\u89c1 SPark \u6570\u636e\u5bfc\u5165\u539f\u7406 <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : NebulaGraph <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\"\u4ece<\/p>\n

\u672c\u6587\u4e3b\u8981\u8bb2\u8ff0\u5982\u4f55\u4f7f\u7528\u6570\u636e\u5bfc\u5165\u5de5\u5177 Nebula Graph Exchange \u5c06\u6570\u636e\u4ece Neo4j \u5bfc\u5165\u5230 Nebula Graph Database \u3002\u5728\u8bb2\u8ff0\u5982\u4f55\u5b9e\u64cd\u6570\u636e\u5bfc\u5165\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u4e86\u89e3\u4e0b Nebula Graph \u5185\u90e8\u662f\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e2a\u5bfc\u5165\u529f\u80fd\u7684\u3002<\/p>\n

Nebula Graph Exchange \u7684\u6570\u636e\u5904\u7406\u539f\u7406<\/h2>\n

\u6211\u4eec\u8fd9\u4e2a\u5bfc\u5165\u5de5\u5177\u540d\u5b57\u662f Nebula Graph Exchange\uff0c\u91c7\u7528 Spark \u4f5c\u4e3a\u5bfc\u5165\u5e73\u53f0\uff0c\u6765\u652f\u6301\u6d77\u91cf\u6570\u636e\u7684\u5bfc\u5165\u548c\u4fdd\u969c\u6027\u80fd\u3002Spark \u672c\u8eab\u63d0\u4f9b\u4e86\u4e0d\u9519\u7684\u62bd\u8c61\u2014\u2014DataFrame\uff0c\u4f7f\u5f97\u53ef\u4ee5\u8f7b\u677e\u652f\u6301\u591a\u79cd\u6570\u636e\u6e90\u3002\u5728 DataFrame \u7684\u652f\u6301\u4e0b\uff0c\u6dfb\u52a0\u65b0\u7684\u6570\u636e\u6e90\u53ea\u9700\u63d0\u4f9b\u914d\u7f6e\u6587\u4ef6\u8bfb\u53d6\u7684\u4ee3\u7801\u548c\u8fd4\u56de DataFrame \u7684 Reader \u7c7b\uff0c\u5373\u53ef\u652f\u6301\u65b0\u7684\u6570\u636e\u6e90\u3002<\/p>\n

\"\u4ece<\/p>\n

DataFrame \u53ef\u4ee5\u89c6\u4e3a\u4e00\u79cd\u5206\u5e03\u5f0f\u5b58\u8868\u683c\u3002DataFrame \u53ef\u4ee5\u5b58\u50a8\u5728\u591a\u4e2a\u8282\u70b9\u7684\u4e0d\u540c\u5206\u533a\u4e2d\uff0c\u591a\u4e2a\u5206\u533a\u53ef\u4ee5\u5b58\u50a8\u5728\u4e0d\u540c\u7684\u673a\u5668\u4e0a\uff0c\u4ece\u800c\u652f\u6301\u5e76\u884c\u64cd\u4f5c\u3002Spark \u8fd8\u63d0\u4f9b\u4e86\u4e00\u5957\u7b80\u6d01\u7684 API \u4f7f\u7528\u6237\u8f7b\u677e\u64cd\u4f5c DataFrame \u5982\u540c\u64cd\u4f5c\u672c\u5730\u6570\u636e\u96c6\u4e00\u822c\u3002\u73b0\u5728\u5927\u591a\u6570\u6570\u636e\u5e93\u63d0\u4f9b\u76f4\u63a5\u5c06\u6570\u636e\u5bfc\u51fa\u6210 DataFrame \u529f\u80fd\uff0c\u5373\u4f7f\u67d0\u4e2a\u6570\u636e\u5e93\u5e76\u672a\u63d0\u4f9b\u6b64\u529f\u80fd\u4e5f\u53ef\u4ee5\u901a\u8fc7\u6570\u636e\u5e93 driver \u624b\u52a8\u6784\u5efa DataFrame \u3002<\/p>\n

Nebula Graph Exchange \u5c06\u6570\u636e\u6e90\u7684\u6570\u636e\u5904\u7406\u6210 DataFrame \u4e4b\u540e\uff0c\u4f1a\u904d\u5386\u5b83\u7684\u6bcf\u4e00\u884c\uff0c\u6839\u636e\u914d\u7f6e\u6587\u4ef6\u4e2d fields \u7684\u6620\u5c04\u5173\u7cfb\uff0c\u6309\u5217\u540d\u83b7\u53d6\u5bf9\u5e94\u7684\u503c\u3002\u5728\u904d\u5386 batchSize<\/code> \u4e2a\u884c\u4e4b\u540e\uff0cExchange \u4f1a\u5c06\u83b7\u53d6\u7684\u6570\u636e\u4e00\u6b21\u6027\u5199\u5165\u5230 Nebula Graph \u4e2d\u3002\u76ee\u524d\uff0cExchange \u662f\u901a\u8fc7\u751f\u6210 nGQL \u8bed\u53e5\u518d\u7531 Nebula Client \u5f02\u6b65\u5199\u5165\u6570\u636e\uff0c\u4e0b\u4e00\u6b65\u4f1a\u652f\u6301\u76f4\u63a5\u5bfc\u51fa Nebula Graph \u5e95\u5c42\u5b58\u50a8\u7684 sst \u6587\u4ef6\uff0c\u4ee5\u83b7\u53d6\u66f4\u597d\u7684\u6027\u80fd\u3002\u63a5\u4e0b\u6765\u4ecb\u7ecd\u4e00\u4e0b Neo4j \u6570\u636e\u6e90\u5bfc\u5165\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/p>\n

Neo4j \u6570\u636e\u5bfc\u5165\u5177\u4f53\u5b9e\u73b0<\/h2>\n

\u867d\u7136 Neo4j \u5b98\u65b9\u63d0\u4f9b\u4e86\u53ef\u5c06\u6570\u636e\u76f4\u63a5\u5bfc\u51fa\u4e3a DataFrame \u7684\u5e93\uff0c\u4f46\u4f7f\u7528\u5b83\u8bfb\u53d6\u6570\u636e\u96be\u4ee5\u6ee1\u8db3\u65ad\u70b9\u7eed\u4f20\u7684\u9700\u6c42\uff0c\u6211\u4eec\u672a\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e2a\u5e93\uff0c\u800c\u662f\u4f7f\u7528 Neo4j \u5b98\u65b9\u7684 driver \u5b9e\u73b0\u6570\u636e\u8bfb\u53d6\u3002Exchange \u901a\u8fc7\u5728\u4e0d\u540c\u5206\u533a\u8c03\u53d6 Neo4j driver \u6267\u884c\u4e0d\u540c skip<\/code> \u548c limit<\/code> \u7684 Cypher \u8bed\u53e5\uff0c\u5c06\u6570\u636e\u5206\u5e03\u5728\u4e0d\u540c\u7684\u5206\u533a\uff0c\u6765\u83b7\u53d6\u66f4\u597d\u7684\u6027\u80fd\u3002\u8fd9\u4e2a\u5206\u533a\u6570\u91cf\u7531\u914d\u7f6e\u9879 partition<\/code> \u6307\u5b9a\u3002<\/p>\n

Exchange \u4e2d\u7684 Neo4jReader\u00a0\u7c7b\u4f1a\u5148\u5c06\u7528\u6237\u914d\u7f6e\u4e2d\u7684 exec<\/code> Cypher \u8bed\u53e5\uff0creturn<\/code> \u540e\u8fb9\u7684\u8bed\u53e5\u66ff\u6362\u6210 count(*)<\/code> \u6267\u884c\u83b7\u53d6\u6570\u636e\u603b\u91cf\uff0c\u518d\u6839\u636e\u5206\u533a\u6570\u8ba1\u7b97\u6bcf\u4e2a\u5206\u533a\u7684\u8d77\u59cb\u504f\u79fb\u91cf\u548c\u5927\u5c0f\u3002\u8fd9\u91cc\u5982\u679c\u7528\u6237\u914d\u7f6e\u4e86 check_point_path<\/code> \u76ee\u5f55\uff0c\u4f1a\u8bfb\u53d6\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\uff0c\u5982\u679c\u5904\u4e8e\u7eed\u4f20\u7684\u72b6\u6001\uff0cExchange \u4f1a\u8ba1\u7b97\u51fa\u6bcf\u4e2a\u5206\u533a\u5e94\u8be5\u7684\u504f\u79fb\u91cf\u548c\u5927\u5c0f\u3002\u7136\u540e\u6bcf\u4e2a\u5206\u533a\u5728 Cypher \u8bed\u53e5\u540e\u8fb9\u6dfb\u52a0\u4e0d\u540c\u7684 skip<\/code> \u548c limit<\/code>\uff0c\u8c03\u7528 driver \u6267\u884c\u3002\u6700\u540e\u5c06\u8fd4\u56de\u7684\u6570\u636e\u5904\u7406\u6210 DataFrame \u5c31\u5b8c\u6210\u4e86 Neo4j \u7684\u6570\u636e\u5bfc\u5165\u3002<\/p>\n

\u8fc7\u7a0b\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n

\"\u4ece<\/p>\n

Neo4j \u6570\u636e\u5bfc\u5165\u5b9e\u8df5<\/h2>\n

\u6211\u4eec\u8fd9\u91cc\u5bfc\u5165\u6f14\u793a\u7684\u7cfb\u7edf\u73af\u5883\u5982\u4e0b\uff1a<\/p>\n

    \n
  • cpu name\uff1aIntel(R) Xeon(R) CPU E5-2697 v3 @ 2.60GHz<\/li>\n
  • cpu cores\uff1a14<\/li>\n
  • memory size\uff1a251G<\/li>\n<\/ul>\n

    \u8f6f\u4ef6\u73af\u5883\u5982\u4e0b\uff1a<\/p>\n

      \n
    • Neo4j\uff1a3.5.20 \u793e\u533a\u7248<\/li>\n
    • Nebula graph\uff1adocker-compose \u90e8\u7f72\uff0c\u9ed8\u8ba4\u914d\u7f6e<\/li>\n
    • Spark\uff1a\u5355\u673a\u7248\uff0c\u7248\u672c\u4e3a 2.4.6 pre-build for hadoop2.7<\/li>\n<\/ul>\n

      \u7531\u4e8e Nebula Graph \u662f\u5f3a schema \u6570\u636e\u5e93\uff0c\u6570\u636e\u5bfc\u5165\u524d\u9700\u5148\u8fdb\u884c\u521b\u5efa Space\uff0c\u5efa Tag \u548c Edge \u7684 schema\uff0c\u5177\u4f53\u7684\u8bed\u6cd5\u53ef\u4ee5\u53c2\u8003\u8fd9\u91cc\u3002<\/p>\n

      \u8fd9\u91cc\u5efa\u4e86\u540d\u4e3a test \u7684 Space\uff0c\u526f\u672c\u6570\u4e3a 1 \u3002\u8fd9\u91cc\u521b\u5efa\u4e86\u4e24\u79cd Tag \u5206\u522b\u4e3a tagA \u548c tagB\uff0c\u5747\u542b\u6709 4 \u4e2a\u5c5e\u6027\u7684\u70b9\u7c7b\u578b\uff0c\u6b64\u5916\uff0c\u8fd8\u521b\u5efa\u4e00\u79cd\u540d\u4e3a edgeAB \u7684\u8fb9\u7c7b\u578b\uff0c\u540c\u6837\u542b\u6709 4 \u4e2a\u5c5e\u6027\u3002\u5177\u4f53\u7684 nGQL \u8bed\u53e5\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

      # \u521b\u5efa\u56fe\u7a7a\u95f4 CREATE SPACE test(replica_factor=1); # \u9009\u62e9\u56fe\u7a7a\u95f4 test USE test; # \u521b\u5efa\u6807\u7b7e tagA CREATE TAG tagA(idInt int, idString string, tboolean bool, tdouble double); # \u521b\u5efa\u6807\u7b7e tagB CREATE TAG tagB(idInt int, idString string, tboolean bool, tdouble double); # \u521b\u5efa\u8fb9\u7c7b\u578b edgeAB CREATE EDGE edgeAB(idInt int, idString string, tboolean bool, tdouble double); <\/code><\/pre>\n
      \u540c\u65f6\u5411 Neo4j \u5bfc\u5165 Mock \u6570\u636e\u2014\u2014\u6807\u7b7e\u4e3a tagA \u548c tagB \u7684\u70b9\uff0c\u6570\u91cf\u603b\u5171\u4e3a 100 \u4e07\uff0c\u5e76\u4e14\u5bfc\u5165\u4e86\u8fde\u63a5 tagA \u548c tagB \u7c7b\u578b\u70b9\u8fb9\u7c7b\u578b\u4e3a edgeAB \u7684\u8fb9\uff0c\u5171 1000 \u4e07\u4e2a\u3002\u53e6\u5916\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4ece Neo4j \u5bfc\u51fa\u7684\u6570\u636e\u5728 Nebula Graph \u4e2d\u5fc5\u987b\u5b58\u5728\u5c5e\u6027\uff0c\u4e14\u6570\u636e\u5bf9\u5e94\u7684\u7c7b\u578b\u8981\u540c Nebula Graph \u4e00\u81f4\u3002<\/p>\n
      \u6700\u540e\u4e3a\u4e86\u63d0\u5347\u5411 Neo4j \u5bfc\u5165 Mock \u6570\u636e\u7684\u6548\u7387\u548c Mock \u6570\u636e\u5728 Neo4j \u4e2d\u7684\u8bfb\u53d6\u6548\u7387\uff0c\u8fd9\u91cc\u4e3a tagA \u548c tagB \u7684 idInt<\/code> \u5c5e\u6027\u5efa\u4e86\u7d22\u5f15\u3002\u5173\u4e8e\u7d22\u5f15\u9700\u8981\u6ce8\u610f Exchange \u5e76\u4e0d\u4f1a\u5c06 Neo4j \u4e2d\u7684\u7d22\u5f15\u3001\u7ea6\u675f\u7b49\u4fe1\u606f\u5bfc\u5165\u5230 Nebula Graph \u4e2d\uff0c\u6240\u4ee5\u9700\u8981\u7528\u6237\u5728\u6267\u884c\u6570\u636e\u5199\u5165\u5728 Nebula Graph \u4e4b\u540e\uff0c\u81ea\u884c\u521b\u5efa\u7d22\u5f15\u548c REBUILD \u7d22\u5f15\uff08\u4e3a\u5df2\u6709\u6570\u636e\u5efa\u7acb\u7d22\u5f15\uff09\u3002<\/p>\n
      \u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u5c06 Neo4j \u6570\u636e\u5bfc\u5165\u5230 Nebula Graph \u4e2d\u4e86\uff0c\u9996\u5148\u6211\u4eec\u9700\u8981\u4e0b\u8f7d\u548c\u7f16\u8bd1\u6253\u5305\u9879\u76ee\uff0c\u9879\u76ee\u5728 nebula-java \u8fd9\u4e2a\u4ed3\u5e93\u4e0b tools\/exchange \u6587\u4ef6\u5939\u4e2d\u3002\u53ef\u6267\u884c\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n
      git clone https:\/\/github.com\/vesoft-inc\/nebula-java.git cd nebula-java\/tools\/exchange mvn package -DskipTests <\/code><\/pre>\n
      \u7136\u540e\u5c31\u53ef\u4ee5\u770b\u5230 target\/exchange-1.0.1.jar<\/code> \u8fd9\u4e2a\u6587\u4ef6\u3002<\/p>\n
      \u63a5\u4e0b\u6765\u7f16\u5199\u914d\u7f6e\u6587\u4ef6\uff0c\u914d\u7f6e\u6587\u4ef6\u7684\u683c\u5f0f\u4e3a\uff1aHOCON \uff08 Human-Optimized Config Object Notation \uff09\uff0c\u53ef\u4ee5\u57fa\u4e8e src\/main\/resources\/server_application.conf<\/code> \u6587\u4ef6\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u66f4\u6539\u3002\u9996\u5148\u5bf9 nebula \u914d\u7f6e\u9879\u4e0b\u7684 address \u3001user \u3001pswd \u548c space \u8fdb\u884c\u914d\u7f6e\uff0c\u6d4b\u8bd5\u73af\u5883\u5747\u4e3a\u9ed8\u8ba4\u914d\u7f6e\uff0c\u6240\u4ee5\u8fd9\u91cc\u4e0d\u9700\u8981\u989d\u5916\u7684\u4fee\u6539\u3002\u7136\u540e\u8fdb\u884c tags \u914d\u7f6e\uff0c\u9700\u8981 tagA \u548c tagB \u7684\u914d\u7f6e\uff0c\u8fd9\u91cc\u4ec5\u5c55\u793a tagA \u914d\u7f6e\uff0ctagB \u548c tagA \u914d\u7f6e\u76f8\u540c\u3002<\/p>\n
      {     # ======neo4j \u8fde\u63a5\u8bbe\u7f6e=======     name: tagA     # \u5fc5\u987b\u548c Nebula Graph \u7684\u4e2d tag \u540d\u5b57\u4e00\u81f4\uff0c\u9700\u8981\u5728 Nebula Graph \u4e2d\u4e8b\u5148\u5efa\u597d tag     server: \"bolt:\/\/127.0.0.1:7687\"     # neo4j \u7684\u5730\u5740\u914d\u7f6e     user: neo4j     # neo4j \u7684\u7528\u6237\u540d     password: neo4j     # neo4j \u7684\u5bc6\u7801      encryption: false     # (\u53ef\u9009): \u4f20\u8f93\u662f\u5426\u52a0\u5bc6\uff0c\u9ed8\u8ba4\u503c\u4e3a false     database: graph.db     # (\u53ef\u9009): neo4j database \u540d\u79f0\uff0c\u793e\u533a\u7248\u4e0d\u652f\u6301      # ======\u5bfc\u5165\u8bbe\u7f6e============     type: {         source: neo4j         # \u8fd8\u652f\u6301 PARQUET \u3001ORC \u3001JSON \u3001CSV \u3001HIVE \u3001MYSQL \u3001PULSAR \u3001KAFKA...         sink: client         # \u5199\u5165 Nebula Graph \u7684\u65b9\u5f0f\uff0c\u76ee\u524d\u4ec5\u652f\u6301 client\uff0c\u672a\u6765\u4f1a\u652f\u6301\u76f4\u63a5\u5bfc\u51fa Nebula Graph \u5e95\u5c42\u6570\u636e\u5e93\u6587\u4ef6     }      nebula.fields: [idInt, idString, tdouble, tboolean]     fields       : [idInt, idString, tdouble, tboolean]     # \u6620\u5c04\u5173\u7cfb fields\uff0c\u4e0a\u65b9\u4e3a nebula \u7684\u5c5e\u6027\u540d\uff0c\u4e0b\u65b9\u4e3a neo4j \u7684\u5c5e\u6027\u540d\uff0c\u4e00\u4e00\u5bf9\u5e94     # \u6620\u5c04\u5173\u7cfb\u7684\u914d\u7f6e\u662f List \u800c\u4e0d\u662f Map\uff0c\u662f\u4e3a\u4e86\u4fdd\u6301 fields \u7684\u987a\u5e8f\uff0c\u672a\u6765\u76f4\u63a5\u5bfc\u51fa nebula \u5e95\u5c42\u5b58\u50a8\u6587\u4ef6\u65f6\u9700\u8981      vertex: idInt     # \u4f5c\u4e3a nebula vid \u7684 neo4j field\uff0c\u7c7b\u578b\u9700\u8981\u662f\u6574\u6570(long or int)\u3002      partition: 10     # \u5206\u533a\u6570     batch: 2000     # \u4e00\u6b21\u5199\u5165 nebula \u591a\u5c11\u6570\u636e      check_point_path: \"file:\/\/\/tmp\/test\"     # (\u53ef\u9009): \u4fdd\u5b58\u5bfc\u5165\u8fdb\u5ea6\u4fe1\u606f\u7684\u76ee\u5f55\uff0c\u7528\u4e8e\u65ad\u70b9\u7eed\u4f20      exec: \"match (n:tagA) return n.idInt as idInt, n.idString as idString, n.tdouble as tdouble, n.tboolean as tboolean order by n.idInt\" } <\/code><\/pre>\n
      \u8fb9\u7684\u8bbe\u7f6e\u5927\u90e8\u5206\u4e0e\u70b9\u7684\u8bbe\u7f6e\u65e0\u5f02\uff0c\u4f46\u7531\u4e8e\u8fb9\u5728 Nebula Graph \u4e2d\u6709\u8d77\u70b9\u7684 vid \u548c\u7ec8\u70b9\u7684 vid \u6807\u8bc6\uff0c\u6240\u4ee5\u8fd9\u91cc\u9700\u8981\u6307\u5b9a\u4f5c\u4e3a\u8fb9\u8d77\u70b9 vid \u7684\u57df\u548c\u4f5c\u4e3a\u8fb9\u7ec8\u70b9 vid \u7684\u57df\u3002<\/p>\n
      \u4e0b\u9762\u7ed9\u51fa\u8fb9\u7684\u7279\u522b\u914d\u7f6e\u3002<\/p>\n
      source: {   field: a.idInt   # policy: \"hash\" } # \u8d77\u70b9\u7684 vid \u8bbe\u7f6e target: {   field: b.idInt   # policy: \"uuid\" } # \u7ec8\u70b9\u7684 vid \u8bbe\u7f6e  ranking: idInt # (\u53ef\u9009): \u4f5c\u4e3a rank \u7684 field  partition: 1 # \u8fd9\u91cc\u5206\u533a\u6570\u8bbe\u7f6e\u4e3a 1\uff0c\u539f\u56e0\u5728\u540e\u8fb9  exec: \"match (a:tagA)-[r:edgeAB]->(b:tagB) return a.idInt, b.idInt, r.idInt as idInt, r.idString as idString, r.tdouble as tdouble, r.tboolean as tboolean order by id(r)\" <\/code><\/pre>\n
      \u70b9\u7684 vertex \u548c\u8fb9\u7684 source \u3001target \u914d\u7f6e\u9879\u4e0b\u90fd\u53ef\u4ee5\u8bbe\u7f6e policy hash\/uuid\uff0c\u5b83\u53ef\u4ee5\u5c06\u7c7b\u578b\u4e3a\u5b57\u7b26\u4e32\u7684\u57df\u4f5c\u4e3a\u70b9\u7684 vid\uff0c\u901a\u8fc7 hash\/uuid \u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u6620\u5c04\u6210\u6574\u6570\u3002<\/p>\n
      \u4e0a\u9762\u7684\u4f8b\u5b50\u7531\u4e8e\u4f5c\u4e3a\u70b9\u7684 vid \u4e3a\u6574\u6570\uff0c\u6240\u4ee5\u5e76\u4e0d\u9700\u8981 policy \u7684\u8bbe\u7f6e\u3002hash\/uuid \u7684 \u533a\u522b\u8bf7\u770b\u8fd9\u91cc\u3002<\/p>\n
      Cypher \u6807\u51c6\u4e2d\u5982\u679c\u6ca1\u6709 order by<\/code> \u7ea6\u675f\u7684\u8bdd\u5c31\u4e0d\u80fd\u4fdd\u8bc1\u6bcf\u6b21\u67e5\u8be2\u7ed3\u679c\u7684\u6392\u5e8f\u4e00\u81f4\uff0c\u867d\u7136\u770b\u8d77\u6765\u5373\u4fbf\u4e0d\u52a0 order by<\/code> Neo4j \u8fd4\u56de\u7684\u7ed3\u679c\u987a\u5e8f\u4e5f\u662f\u4e0d\u53d8\u7684\uff0c\u4f46\u4e3a\u4e86\u9632\u6b62\u53ef\u80fd\u9020\u6210\u7684\u5bfc\u5165\u65f6\u6570\u636e\u4e22\u5931\uff0c\u8fd8\u662f\u5f3a\u70c8\u5efa\u8bae\u5728 Cypher \u8bed\u53e5\u4e2d\u52a0\u5165 order by<\/code>\uff0c\u867d\u7136\u8fd9\u4f1a\u589e\u52a0\u5bfc\u5165\u7684\u65f6\u95f4\u3002\u4e3a\u4e86\u63d0\u5347\u5bfc\u5165\u6548\u7387\uff0c order by<\/code>\u00a0\u8bed\u53e5\u6700\u597d\u9009\u53d6\u6709\u7d22\u5f15\u7684\u5c5e\u6027\u4f5c\u4e3a\u6392\u5e8f\u7684\u5c5e\u6027\u3002\u5982\u679c\u6ca1\u6709\u7d22\u5f15\uff0c\u4e5f\u53ef\u89c2\u5bdf\u9ed8\u8ba4\u7684\u6392\u5e8f\uff0c\u9009\u62e9\u5408\u9002\u7684\u6392\u5e8f\u5c5e\u6027\u4ee5\u63d0\u9ad8\u6548\u7387\u3002\u5982\u679c\u9ed8\u8ba4\u7684\u6392\u5e8f\u627e\u4e0d\u5230\u89c4\u5f8b\uff0c\u53ef\u4ee5\u4f7f\u7528\u70b9 \/\u5173\u7cfb\u7684 ID \u4f5c\u4e3a\u6392\u5e8f\u5c5e\u6027\uff0c\u5e76\u4e14\u5c06 partition<\/code> \u7684\u503c\u5c3d\u91cf\u8bbe\u5c0f\uff0c\u51cf\u5c11 Neo4j \u7684\u6392\u5e8f\u538b\u529b\uff0c\u672c\u6587\u4e2d\u8fb9 edgeAB<\/code> \u7684 partition<\/code>\u00a0\u5c31\u8bbe\u7f6e\u4e3a 1 \u3002<\/p>\n
      \u53e6\u5916 Nebula Graph \u5728\u521b\u5efa\u70b9\u548c\u8fb9\u65f6\u4f1a\u5c06 ID \u4f5c\u4e3a\u552f\u4e00\u4e3b\u952e\uff0c\u5982\u679c\u4e3b\u952e\u5df2\u5b58\u5728\u5219\u4f1a\u8986\u76d6\u8be5\u4e3b\u952e\u4e2d\u7684\u6570\u636e\u3002\u6240\u4ee5\u5047\u5982\u5c06\u67d0\u4e2a Neo4j \u5c5e\u6027\u503c\u4f5c\u4e3a Nebula Graph \u7684 ID\uff0c\u800c\u8fd9\u4e2a\u5c5e\u6027\u503c\u5728 Neo4j \u4e2d\u662f\u6709\u91cd\u590d\u7684\uff0c\u5c31\u4f1a\u5bfc\u81f4\u201c\u91cd\u590d ID\u201d\u5bf9\u5e94\u7684\u6570\u636e\u6709\u4e14\u53ea\u6709\u4e00\u6761\u4f1a\u5b58\u5165 Nebula Graph \u4e2d\uff0c\u5176\u5b83\u7684\u5219\u4f1a\u88ab\u8986\u76d6\u6389\u3002\u7531\u4e8e\u6570\u636e\u5bfc\u5165\u8fc7\u7a0b\u662f\u5e76\u53d1\u5730\u5f80 Nebula Graph \u4e2d\u5199\u6570\u636e\uff0c\u6700\u7ec8\u4fdd\u5b58\u7684\u6570\u636e\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u662f Neo4j \u4e2d\u6700\u65b0\u7684\u6570\u636e\u3002<\/p>\n
      \u8fd9\u91cc\u8fd8\u8981\u7559\u610f\u4e0b\u65ad\u70b9\u7eed\u4f20\u529f\u80fd\uff0c\u5728\u65ad\u70b9\u548c\u7eed\u4f20\u4e4b\u95f4\uff0c\u6570\u636e\u5e93\u4e0d\u5e94\u8be5\u6539\u53d8\u72b6\u6001\uff0c\u5982\u6dfb\u52a0\u6570\u636e\u6216\u5220\u9664\u6570\u636e\uff0c\u4e14 partition<\/code>\u00a0\u6570\u91cf\u4e5f\u4e0d\u80fd\u66f4\u6539\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u6709\u6570\u636e\u4e22\u5931\u3002<\/p>\n
      \u6700\u540e\u7531\u4e8e Exchange \u9700\u8981\u5728\u4e0d\u540c\u5206\u533a\u6267\u884c\u4e0d\u540c skip<\/code> \u548c limit<\/code> \u7684 Cypher \u8bed\u53e5\uff0c\u6240\u4ee5\u7528\u6237\u63d0\u4f9b\u7684 Cypher \u8bed\u53e5\u4e0d\u80fd\u542b\u6709 skip<\/code> \u548c limit<\/code> \u8bed\u53e5\u3002<\/p>\n
      \u63a5\u4e0b\u6765\u5c31\u53ef\u4ee5\u8fd0\u884c Exchange \u7a0b\u5e8f\u5bfc\u6570\u636e\u4e86\uff0c\u6267\u884c\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n
      $SPARK_HOME\/bin\/spark-submit  --class com.vesoft.nebula.tools.importer.Exchange --master \"local[10]\" target\/exchange-1.0.1.jar -c \/path\/to\/conf\/neo4j_application.conf <\/code><\/pre>\n
      \u5728\u4e0a\u8ff0\u8fd9\u4e9b\u914d\u7f6e\u4e0b\uff0c\u5bfc\u5165 100 \u4e07\u4e2a\u70b9\u7528\u65f6 13s\uff0c\u5bfc\u5165 1000 \u4e07\u6761\u8fb9\u7528\u65f6 213s\uff0c\u603b\u7528\u65f6\u662f 226s \u3002<\/p>\n
      \u9644\uff1aNeo4j 3.5 Community \u548c Nebula Graph 1.0.1 \u7684\u4e00\u4e9b\u6bd4\u8f83<\/h2>\n
      Neo4j \u548c Nebula Graph \u5728\u7cfb\u7edf\u67b6\u6784\u3001\u6570\u636e\u6a21\u578b\u548c\u8bbf\u95ee\u65b9\u5f0f\u4e0a\u90fd\u6709\u4e00\u4e9b\u5dee\u5f02\uff0c\u4e0b\u8868\u5217\u4e3e\u4e86\u5e38\u89c1\u7684\u5f02\u540c<\/p>\n
      \"\u4ece<\/p>\n
      \n
      \u4f5c\u8005\u6709\u8bdd\u8bf4\uff1aHi\uff0c\u6211\u662f\u674e\u68a6\u6377\uff0c\u56fe\u6570\u636e\u5e93 Nebula Graph \u7684\u7814\u53d1\u5de5\u7a0b\u5e08\uff0c\u5982\u679c\u4f60\u5bf9\u6b64\u6587\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u6765\u6211\u4eec\u7684 Nebula Graph \u8bba\u575b\u4ea4\u6d41\u4e0b\u5fc3\u5f97~~<\/p>\n<\/blockquote>\n
      \u559c\u6b22\u8fd9\u7bc7\u6587\u7ae0\uff1f\u6765\u6765\u6765\uff0c\u7ed9\u6211\u4eec\u7684 GitHub \u70b9\u4e2a star \u8868\u9f13\u52b1\u5566~~       <\/p><\/div>\n
       \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (0<\/span>)        <\/div>\n
       <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
        \n
      • \n","protected":false},"excerpt":{"rendered":"
        \u4ece Neo4j \u5bfc\u5165 Nebula…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/156654"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=156654"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/156654\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=156654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=156654"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=156654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}