{"id":46984,"date":"2023-12-22T21:54:04","date_gmt":"2022-11-25T12:50:42","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e9%98%85%e8%af%bbavro%e8%a7%84%e8%8c%83%e4%b9%a6%e3%80%82\/"},"modified":"2024-05-04T14:53:48","modified_gmt":"2024-05-04T06:53:48","slug":"%e5%b0%9d%e8%af%95%e9%98%85%e8%af%bbavro%e8%a7%84%e8%8c%83%e4%b9%a6%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e9%98%85%e8%af%bbavro%e8%a7%84%e8%8c%83%e4%b9%a6%e3%80%82\/","title":{"rendered":"\u5c1d\u8bd5\u9605\u8bfbAvro\u89c4\u8303\u4e66"},"content":{"rendered":"

\u7b80\u800c\u8a00\u4e4b\u3002<\/h2>\n

CDC Replication Engine for Kafka\u662f\u4e00\u6b3e\u7528\u4e8eKafka\u7684\u5de5\u5177\u4ea7\u54c1\uff0c\u5b83\u81ea\u52a8\u4e3a\u6211\u6ce8\u518c\u4e86Avro Schema\uff0c\u4f46\u662f\u6211\u53d1\u73b0\u5176\u4e2d\u6709\u4e00\u4e9b\u95ee\u9898\uff0c\u6240\u4ee5\u5728\u67e5\u770bApache Avro\u2122 1.10.2\u89c4\u8303\u7684\u540c\u65f6\u5c1d\u8bd5\u8fdb\u884c\u89e3\u8bfb\u5e76\u8bb0\u5f55\u4e86\u4ee5\u4e0b\u5185\u5bb9\u3002
\n\u9996\u5148\uff0c\u6211\u8981\u8bf4\u660e\u7684\u662f\uff0c\u6211\u5df2\u7ecf\u5b66\u4f1a\u4e86\u5982\u4f55\u9605\u8bfbAvro Schema\uff0c\u4f46\u6700\u7ec8\u6211\u5bf9\u5176\u4e2d\u5f15\u8d77\u7591\u95ee\u7684\u5730\u65b9\u5e76\u6ca1\u6709\u5b8c\u5168\u89e3\u51b3\u3002<\/p>\n

\u6e90\u5934<\/h2>\n

\u6211\u6b63\u5728\u9a8c\u8bc1\u5c06\u4f4d\u4e8e\u4e3b\u673a\u4e0a\u7684IMS\u5c42\u6b21\u578b\u6570\u636e\u5e93\u590d\u5236\u5230Kafka\u4e2d\u3002\u4eceIMS\u62bd\u53d6\u6570\u636e\u4f7f\u7528\u4e86Infosphere Classic CDC for z\/OS\uff08\u4ee5\u4e0b\u7b80\u79f0CCDC\uff09\uff0c\u5e76\u4f7f\u7528CDC Replication Engine for Kafka\uff08\u4ee5\u4e0b\u7b80\u79f0CDC for Kafka\uff09\u5c06\u6570\u636e\u6295\u5165\u5230Kafka\u4e2d\u3002<\/p>\n

\u5982\u679c\u6211\u4eec\u4ee5CCDC\u7684\u65b9\u5f0f\u63d0\u4f9bDB\u8bb0\u5f55\u7684\u903b\u8f91\u89c6\u89d2\u6216\u6570\u636e\u7ed3\u6784\uff0c\u5373\u901a\u8fc7\u5143\u6570\u636e\u7684\u5f62\u5f0f\u7ed9\u4e88\uff0c\u90a3\u4e48CDC for Kafka\u5c06\u81ea\u52a8\u521b\u5efa\u76ee\u6807\u4e3b\u9898\u5e76\u5c06\u4e0e\u5143\u6570\u636e\u5bf9\u5e94\u7684\u6570\u636e\u7ed3\u6784\u4ee5Avro\u683c\u5f0f\u6ce8\u518c\u4e3a\u6a21\u5f0f\uff0c\u8fd9\u975e\u5e38\u65b9\u4fbf\u3002
\n\u6211\u5df2\u7ecf\u6d4b\u8bd5\u4e86\u4e00\u7cfb\u5217\u7684\u6570\u636e\u7c7b\u578b\uff0c\u786e\u4fdd\u4ece\u751f\u6210\u5143\u6570\u636e\u5230\u6ce8\u518cAvro\u6a21\u5f0f\uff0c\u518d\u5230\u590d\u5236\u7b49\u6574\u4e2a\u6d41\u7a0b\u90fd\u80fd\u591f\u6b63\u5e38\u8fd0\u884c\u3002\u7136\u800c\uff0c\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u6211\u8fd8\u6709\u4e00\u4e9b\u7591\u95ee\u3002<\/p>\n

\u4e8c\u8fdb\u5236\u6570\u636e\u7684\u590d\u5236\uff0c\u6211\u4eec\u5206\u522b\u5c1d\u8bd5\u4e861\u5b57\u8282\u30012\u5b57\u8282\u548c4\u5b57\u8282\uff0c\u4f46\u662f\u5728\u6e90\u5934(\u5373IMS)\u4e2d\u662f0xf0\u7684\u5730\u65b9\uff0c\u5f53\u5728Kafka\u7aef\u4f7f\u7528avro-consume\u6765\u6d88\u8d39\u65f6\uff0c\u5b83\u53d8\u6210\u4e86d\u3002\u800c0xfff0\u53d8\u6210\u4e86yd\uff0c0xfffffff0\u53d8\u6210\u4e86yyyd\u3002<\/p>\n

\u6211\u660e\u767d0xff\u4ee3\u8868y\uff0c0xf0\u4ee3\u8868d\uff0c\u4f46\u5e76\u4e0d\u662f\u8bf4y\u662fd\u7684\u7b2c15\u4e2a\u5b57\u7b26\uff0c\u4e3a\u4ec0\u4e48\u4f1a\u53d8\u6210\u8fd9\u6837\u6211\u4e0d\u660e\u767d\u3002
\n\u56e0\u6b64\uff0c\u6211\u51b3\u5b9a\u9996\u5148\u8ba4\u771f\u67e5\u770b\u6211\u4e4b\u524d\u5b8c\u5168\u4ea4\u7ed9CDC for Kafka\u5904\u7406\u7684Avro\u6a21\u5f0f\u6ce8\u518c\u3002<\/p>\n

\u8c03\u67e5\u5bf9\u8c61\u4e3aAvro\u6a21\u5f0f<\/h2>\n
{<\/span>\r\n    \"type\"<\/span>:<\/span> \"record\"<\/span>,<\/span>\r\n    \"name\"<\/span>:<\/span> \"RTSEG2\"<\/span>,<\/span>\r\n    \"namespace\"<\/span>:<\/span> \"value.SOURCEDB.IMS.HICKA1\"<\/span>,<\/span>\r\n    \"fields\"<\/span>:<\/span> [<\/span>\r\n        {<\/span>\r\n        \"name\"<\/span>:<\/span> \"RT_KEY\"<\/span>,<\/span>\r\n        \"type\"<\/span>:<\/span> [<\/span>\r\n            {<\/span>\r\n            \"type\"<\/span>:<\/span> \"string\"<\/span>,<\/span>\r\n            \"logicalType\"<\/span>:<\/span> \"CHARACTER\"<\/span>,<\/span>\r\n            \"dbColumnName\"<\/span>:<\/span> \"RT_KEY\"<\/span>,<\/span>\r\n            \"length\"<\/span>:<\/span> 6<\/span>\r\n            },<\/span>\r\n            \"null\"<\/span>\r\n        ],<\/span>\r\n        \"doc\"<\/span>:<\/span> \"\"<\/span>,<\/span>\r\n        \"default\"<\/span>:<\/span> \"\"<\/span>\r\n        },<\/span>\r\n        {<\/span>\r\n        \"name\"<\/span>:<\/span> \"RT_BIT8\"<\/span>,<\/span>\r\n        \"type\"<\/span>:<\/span> [<\/span>\r\n            {<\/span>\r\n            \"type\"<\/span>:<\/span> \"bytes\"<\/span>,<\/span>\r\n            \"logicalType\"<\/span>:<\/span> \"BINARY\"<\/span>,<\/span>\r\n            \"dbColumnName\"<\/span>:<\/span> \"RT_BIT8\"<\/span>,<\/span>\r\n            \"length\"<\/span>:<\/span> 1<\/span>\r\n            },<\/span>\r\n            \"null\"<\/span>\r\n        ],<\/span>\r\n        \"doc\"<\/span>:<\/span> \"\"<\/span>,<\/span>\r\n        \"default\"<\/span>:<\/span> \"\"<\/span>\r\n        },<\/span>\r\n        {<\/span>\r\n        \"name\"<\/span>:<\/span> \"RT_BIT16\"<\/span>,<\/span>\r\n        \"type\"<\/span>:<\/span> [<\/span>\r\n            {<\/span>\r\n            \"type\"<\/span>:<\/span> \"bytes\"<\/span>,<\/span>\r\n            \"logicalType\"<\/span>:<\/span> \"BINARY\"<\/span>,<\/span>\r\n            \"dbColumnName\"<\/span>:<\/span> \"RT_BIT16\"<\/span>,<\/span>\r\n            \"length\"<\/span>:<\/span> 2<\/span>\r\n            },<\/span>\r\n            \"null\"<\/span>\r\n        ],<\/span>\r\n        \"doc\"<\/span>:<\/span> \"\"<\/span>,<\/span>\r\n        \"default\"<\/span>:<\/span> \"\"<\/span>\r\n        },<\/span>\r\n        {<\/span>\r\n        \"name\"<\/span>:<\/span> \"RT_BIT32\"<\/span>,<\/span>\r\n        \"type\"<\/span>:<\/span> [<\/span>\r\n            {<\/span>\r\n            \"type\"<\/span>:<\/span> \"bytes\"<\/span>,<\/span>\r\n            \"logicalType\"<\/span>:<\/span> \"BINARY\"<\/span>,<\/span>\r\n            \"dbColumnName\"<\/span>:<\/span> \"RT_BIT32\"<\/span>,<\/span>\r\n            \"length\"<\/span>:<\/span> 4<\/span>\r\n            },<\/span>\r\n            \"null\"<\/span>\r\n        ],<\/span>\r\n        \"doc\"<\/span>:<\/span> \"\"<\/span>,<\/span>\r\n        \"default\"<\/span>:<\/span> \"\"<\/span>\r\n        }<\/span>\r\n    ]<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u9605\u8bfbAvro\u683c\u5f0f<\/h2>\n
\u4ee5\u4e0b\u662f\u672c\u6b21\u590d\u5236\u7684\u4e3b\u9898\u7684Avro\u67b6\u6784\u8d77\u59cb\u63cf\u8ff0\uff1a<\/p>\n
{<\/span>\r\n    \"type\"<\/span>:<\/span> \"record\"<\/span>,<\/span>\r\n    \"name\"<\/span>:<\/span> \"RTSEG2\"<\/span>,<\/span>\r\n    \"namespace\"<\/span>:<\/span> \"value.SOURCEDB.IMS.HICKA1\"<\/span>,<\/span>\r\n    \"fields\"<\/span>:<\/span> [<\/span>\r\n<\/code><\/pre>\n
\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c”type”: “record”\u8fd9\u4e00\u90e8\u5206\uff0c\u8fd9\u4f7f\u5f97\u8be5\u6a21\u5f0f\u7b26\u5408Avro\u89c4\u8303\u4e2d\u6240\u5b9a\u4e49\u7684”Complex Types”\u3002<\/p>\n
\u590d\u6742\u7c7b\u578b<\/p>\n
Avro\u652f\u6301\u516d\u79cd\u590d\u6742\u7c7b\u578b\uff1a\u8bb0\u5f55\u3001\u679a\u4e3e\u3001\u6570\u7ec4\u3001\u6620\u5c04\u3001\u8054\u5408\u548c\u56fa\u5b9a\u3002<\/p>\n
\u8bb0\u5f55<\/p>\n
\u8bb0\u5f55\u4f7f\u7528\u7c7b\u578b\u540d\u79f0\u201crecord\u201d\uff0c\u5e76\u652f\u6301\u4e09\u4e2a\u5c5e\u6027\uff1a
\n…<\/p><\/blockquote>\n
\u5f53\u770b\u5230Records\u7c7b\u578b\u7684\u8bf4\u660e\u65f6\uff0c\u53ef\u4ee5\u5f97\u51fa\u8fd9\u4e2a\u7ed3\u679c\u3002<\/p>\n
\u5b57\u6bb5\uff1a\u4e00\u4e2aJSON\u6570\u7ec4\uff0c\u5217\u51fa\u5b57\u6bb5\uff08\u5fc5\u9700\uff09\u3002\u6bcf\u4e2a\u5b57\u6bb5\u662f\u4e00\u4e2a\u5e26\u6709\u4ee5\u4e0b\u5c5e\u6027\u7684JSON\u5bf9\u8c61\uff1a<\/p><\/blockquote>\n
\u6839\u636e\u73b0\u6709\u7684\u60c5\u51b5\u6765\u770b\uff0c\u6211\u4eec\u9700\u8981\u5c06\u672c\u6b21\u53d1\u9001\u7684\u6bcf\u4e2a\u5b57\u6bb5\u5b9a\u4e49\u89c6\u4e3a’fields’\u540e\u9762\u62ec\u53f7\u4e2d\u7684JSON\u5bf9\u8c61\uff0c\u5e76\u636e\u6b64\u8fdb\u884c\u89e3\u8bfb\u3002
\n\u8fdb\u4e00\u6b65\u4e86\u89e3\u6709\u5173’fields’\u7684\u8bf4\u660e\u53d1\u73b0<\/p>\n
\u540d\u79f0\uff1a\u4e00\u4e2a\u63d0\u4f9b\u5b57\u6bb5\u540d\u79f0\u7684JSON\u5b57\u7b26\u4e32\uff08\u5fc5\u586b\uff09\uff0c\u548c
\n\u8bf4\u660e\uff1a\u4e00\u4e2a\u63cf\u8ff0\u8be5\u5b57\u6bb5\u7ed9\u7528\u6237\u7684JSON\u5b57\u7b26\u4e32\uff08\u53ef\u9009\uff09\u3002
\n\u7c7b\u578b\uff1a\u4e00\u4e2a\u6309\u7167\u4e0a\u8ff0\u5b9a\u4e49\u7684\u6a21\u5f0f\u3002
\n\u9ed8\u8ba4\u503c\uff1a\u4e00\u4e2a\u7528\u4e8e\u6b64\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\uff0c\u4ec5\u5728\u8bfb\u53d6\u7f3a\u5c11\u6b64\u5b57\u6bb5\u7684\u5b9e\u4f8b\u65f6\u7528\u4e8e\u6a21\u5f0f\u6f14\u5316\u76ee\u7684\u3002\u9ed8\u8ba4\u503c\u7684\u5b58\u5728\u5e76\u4e0d\u4f7f\u5f97\u5b57\u6bb5\u5728\u7f16\u7801\u65f6\u53ef\u9009\u3002\u5141\u8bb8\u7684\u503c\u53d6\u51b3\u4e8e\u5b57\u6bb5\u7684\u6a21\u5f0f\u7c7b\u578b\uff0c\u6839\u636e\u4e0b\u8868\u3002\u8054\u5408\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u5bf9\u5e94\u4e8e\u8054\u5408\u4e2d\u7684\u7b2c\u4e00\u4e2a\u6a21\u5f0f\u3002\u5b57\u8282\u548c\u56fa\u5b9a\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u662fJSON\u5b57\u7b26\u4e32\uff0c\u5176\u4e2dUnicode\u4ee3\u7801\u70b90-255\u6620\u5c04\u4e3a\u65e0\u7b26\u53f78\u4f4d\u5b57\u8282\u503c0-255\u3002\u5373\u4f7f\u5b57\u6bb5\u7684\u503c\u7b49\u4e8e\u5176\u9ed8\u8ba4\u503c\uff0cAvro\u4e5f\u4f1a\u5bf9\u5b57\u6bb5\u8fdb\u884c\u7f16\u7801\u3002<\/p><\/blockquote>\n
\u8fd9\u90fd\u6709\u3002<\/p>\n
        {<\/span>\r\n        \"name\"<\/span>:<\/span> \"RT_BIT8\"<\/span>,<\/span>\r\n        \"type\"<\/span>:<\/span> [<\/span>\r\n            {<\/span>\r\n            \"type\"<\/span>:<\/span> \"bytes\"<\/span>,<\/span>\r\n            \"logicalType\"<\/span>:<\/span> \"BINARY\"<\/span>,<\/span>\r\n            \"dbColumnName\"<\/span>:<\/span> \"RT_BIT8\"<\/span>,<\/span>\r\n            \"length\"<\/span>:<\/span> 1<\/span>\r\n            },<\/span>\r\n            \"null\"<\/span>\r\n        ],<\/span>\r\n        \"doc\"<\/span>:<\/span> \"\"<\/span>,<\/span>\r\n        \"default\"<\/span>:<\/span> \"\"<\/span>\r\n        }<\/span>,<\/span>\r\n<\/code><\/pre>\n
name\u4e3a”RT_BIT8″\uff0c\u5728CCDC\u7aef\u7684\u5143\u6570\u636e\u4e2d\u4f7f\u7528\u76f8\u540c\u7684\u5b57\u6bb5\u540d\u79f0\u3002\u6ca1\u6709doc\u548cdefault\u3002<\/p>\n
\u5728\u7c7b\u578b\u4e2d\uff0c\u6709\u4e00\u4e2a\u88ab\u5927\u62ec\u53f7\u62ec\u8d77\u6765\u7684[{…},”null”]\uff0c\u5176\u4e2d\u6709\u4e24\u4e2a\u503c\u3002\u770b\u8d77\u6765\u8fd9\u662f\u4e00\u79cd\u88ab\u79f0\u4e3aUnion\u7684\u5f62\u5f0f\u3002<\/p>\n
\u5de5\u4f1a<\/p>\n
\u5982\u4e0a\u6240\u8ff0\uff0c\u5de5\u4f1a\u662f\u4f7f\u7528JSON\u6570\u7ec4\u6765\u8868\u793a\u7684\u3002\u4f8b\u5982\uff0c[“null”, “string”] \u58f0\u660e\u4e86\u4e00\u4e2a\u67b6\u6784\uff0c\u53ef\u4ee5\u662fnull\u6216\u5b57\u7b26\u4e32\u3002<\/p><\/blockquote>\n
\u5728\u8fd9\u91cc\uff0c\u524d\u8005\u548c\u540e\u8005\u662f\u6307\u4e24\u4e2a\u503c\uff0c\u5176\u4e2d\u524d\u8005\u4f7f\u7528JSON\u683c\u5f0f\u8fdb\u884c\u63cf\u8ff0\u3002Avro\u89c4\u8303\u4e2d\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u6a21\u5f0f\u4f5c\u4e3a\u63cf\u8ff0\u8be5\u6a21\u5f0f\u7684\u65b9\u6cd5\u3002<\/p>\n
\u6a21\u5f0f\u58f0\u660e<\/p>\n
\u6a21\u5f0f\u4ee5\u4ee5\u4e0b\u5f62\u5f0f\u4e4b\u4e00\u5728JSON\u4e2d\u8868\u793a\uff1a
\n– \u4e00\u4e2aJSON\u5b57\u7b26\u4e32\uff0c\u547d\u540d\u4e00\u4e2a\u5df2\u5b9a\u4e49\u7684\u7c7b\u578b\u3002
\n– \u4e00\u4e2aJSON\u5bf9\u8c61\uff0c\u683c\u5f0f\u5982\u4e0b\uff1a
\n{“type”: “typeName” …attributes…}
\n\u5176\u4e2dtypeName\u662f\u4e00\u4e2a\u539f\u59cb\u7c7b\u578b\u6216\u6d3e\u751f\u7c7b\u578b\u7684\u540d\u79f0\uff0c\u5982\u4e0b\u6240\u5b9a\u4e49\u3002\u5728\u672c\u6587\u6863\u4e2d\u672a\u5b9a\u4e49\u7684\u5c5e\u6027\u53ef\u4ee5\u4f5c\u4e3a\u5143\u6570\u636e\uff0c\u4f46\u4e0d\u80fd\u5f71\u54cd\u5e8f\u5217\u5316\u6570\u636e\u7684\u683c\u5f0f\u3002
\n– \u4e00\u4e2a\u8868\u793a\u5d4c\u5957\u7c7b\u578b\u8054\u5408\u7684JSON\u6570\u7ec4\u3002<\/p><\/blockquote>\n
\u8fd9\u4e2a\u7b2c\u4e8c\u9879\u662f\u4ee5\u201cJSON\u5bf9\u8c61\u201d\u7684\u5f62\u5f0f\u8fdb\u884c\u63cf\u8ff0\u7684\u3002\u5b83\u5c06\u201cbytes\u201d\u4f5c\u4e3atypeName\u8fdb\u884c\u4e86\u6307\u5b9a\u3002
\n\u4f5c\u4e3a\u4e00\u79cd\u7c7b\u578b\uff0c\u5bf9\u4e8ebytes\u7684\u89e3\u91ca\u662f\u4ec0\u4e48\u3002<\/p>\n
\u539f\u59cb\u7c7b\u578b<\/p>\n
\u539f\u59cb\u7c7b\u578b\u7684\u540d\u79f0\u96c6\u5408\u5305\u62ec\uff1a
\n…
\n– \u5b57\u8282\uff1a8\u4f4d\u65e0\u7b26\u53f7\u5b57\u8282\u7684\u5e8f\u5217<\/p><\/blockquote>\n
\u8fd9\u662f\u5982\u6b64\u3002
\n\u800c\u63a5\u4e0b\u6765\u7684”logicalType”: “BINARY”\u6216\u8005”length”: 1\u4f3c\u4e4e\u5bf9\u5e94\u4e8e\u5c5e\u6027\u3002<\/p>\n
\u5173\u4e8elogicalType<\/p>\n
\u903b\u8f91\u7c7b\u578b<\/p>\n
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\n\u300c\u65e0\u6548\u7684logicalType\u6307\u5b9a\u5c06\u88ab\u5ffd\u7565\u300d\uff0c
\n\u4f46\u662f\uff0c\u7531Kafka\u751f\u6210\u7684CDC\u903b\u8f91\u7c7b\u578bBINARY\u5e76\u672a\u5728\u8be5\u89c4\u8303\u7684\u5217\u8868\u4e2d\u5217\u51fa\u3002
\n\u7136\u800c\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u8be5\u903b\u8f91\u7c7b\u578b\u65e0\u8bba\u5176\u6709\u6548\u4e0e\u5426\uff0c\u90fd\u4f1a\u88ab\u89c6\u4e3a\u4ee5\u5b57\u8282\u5f62\u5f0f\u7f16\u7801\u7684\u539f\u59cb\u7c7b\u578b\u3002<\/p>\n
\u7f16\u7801\u89e3\u5bc6<\/h2>\n
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\u5173\u4e8e\u590d\u6742\u7c7b\u578b\u7684\u7f16\u7801\uff0c\u5df2\u7ecf\u5199\u660e\u5982\u4e0b\u3002<\/p>\n
\u590d\u6742\u7c7b\u578b<\/p>\n
\u590d\u6742\u7c7b\u578b\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u4ee5\u4e8c\u8fdb\u5236\u5f62\u5f0f\u8fdb\u884c\u7f16\u7801\uff1a<\/p>\n
\u8bb0\u5f55<\/p>\n
\u8bb0\u5f55\u901a\u8fc7\u6309\u7167\u58f0\u660e\u987a\u5e8f\u5bf9\u5176\u5b57\u6bb5\u7684\u503c\u8fdb\u884c\u7f16\u7801\u6765\u8fdb\u884c\u7f16\u7801\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u8bb0\u5f55\u53ea\u662f\u5b57\u6bb5\u7f16\u7801\u7684\u4e32\u8054\u3002\u5b57\u6bb5\u7684\u503c\u6309\u7167\u5176\u6a21\u5f0f\u8fdb\u884c\u7f16\u7801\u3002
\n\u4f8b\u5982\uff0c\u8bb0\u5f55\u6a21\u5f0f\u4e3a\uff1a<\/p>\n
{
\n“type”: “record”,
\n“name”: “test”,
\n“fields” : [
\n{“name”: “a”, “type”: “long”},
\n{“name”: “b”, “type”: “string”}
\n]
\n}<\/p>\n
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\n36 06 66 6f 6f<\/p><\/blockquote>\n
\u6839\u636e\u5404\u4e2a\u5b57\u6bb5\u7684\u7c7b\u578b\u7f16\u7801\uff0c\u53ea\u662f\u7b80\u5355\u5730\u5c06\u5b83\u4eec\u5199\u5728\u4e00\u8d77\u3002\u4e5f\u5c31\u662f\u8bf4\uff0cJSON\u683c\u5f0f\u4e2d\u5305\u542b\u7684”length”: 1\u5e76\u4e0d\u662f\u7528\u4e8e\u89e3\u7801\u7684\u3002<\/p>\n
\u5bf9\u4e8e\u957f\u5ea6\u4e0d\u786e\u5b9a\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5982\u5b57\u8282\u578b\uff08bytes\uff09\u548c\u5b57\u7b26\u578b\uff08string\uff09\uff0c\u4f3c\u4e4e\u4f1a\u5728\u5f00\u5934\u5e26\u6709\u4e00\u4e2a\u5b57\u8282\u7684\u5b57\u6bb5\u957f\u5ea6\u5934\u90e8\u3002<\/p>\n
\u5b57\u8282\u88ab\u7f16\u7801\u4e3a\u4e00\u4e2a\u957f\u6574\u6570\uff0c\u540e\u9762\u662f\u76f8\u5e94\u6570\u91cf\u7684\u6570\u636e\u5b57\u8282\u3002
\n\u5b57\u7b26\u4e32\u88ab\u7f16\u7801\u4e3a\u4e00\u4e2a\u957f\u6574\u6570\uff0c\u540e\u9762\u662f\u76f8\u5e94\u6570\u91cf\u7684UTF-8\u7f16\u7801\u5b57\u7b26\u6570\u636e\u3002<\/p>\n
\u4f8b\u5982\uff0c\u4e09\u4e2a\u5b57\u7b26\u7684\u5b57\u7b26\u4e32 “foo” \u88ab\u7f16\u7801\u4e3a\u957f\u6574\u6570\u503c 3\uff08\u4ee5\u5341\u516d\u8fdb\u5236 06 \u7f16\u7801\uff09\uff0c\u540e\u9762\u662f\u5b57\u7b26 ‘f’\u3001’o’ \u548c ‘o’ \u7684 UTF-8 \u7f16\u7801\uff08\u5341\u516d\u8fdb\u5236\u5b57\u8282 66 6f 6f\uff09\uff1a
\n06 66 6f 6f<\/p><\/blockquote>\n
\u5f53\u63d0\u53ca3\u5b57\u8282\u7684\u5b57\u7b26\u4e32\u6570\u636e”foo”\u8f6c\u6362\u4e3aUTF-8\uff0c\u5219\u5206\u522b\u4e3a66 6f 6f\u3002\u5728\u6b64\u4e4b\u524d\uff0c\u52a0\u4e0a\u4ee3\u88683\u7684\u957f\u6574\u578b\u503c06\uff0c\u53d8\u4e3a06 66 6f 6f\u3002\u5c3d\u7ba1\u79f0\u4e4b\u4e3a\u957f\u6574\u578b\uff0c\u4f46\u6839\u636e\u8be5\u7f51\u7ad9\u7684\u793a\u4f8b\uff0c\u6240\u6709\u7684\u503c\u90fd\u53d8\u4e3a\u4e861\u5b57\u8282\u957f\u3002<\/p>\n
\u5982\u679c\u6709\u4e00\u4e2a\u4e0a\u4e00\u884c\u662flong\u7c7b\u578b\u5b57\u6bb5\u548cstring\u7c7b\u578b\u5b57\u6bb5\u7684\u8fde\u7eed\u793a\u4f8b\uff0c\u5bf9\u4e8e\u5b9e\u9645\u6570\u636e36 06 66 6f 6f\uff0c\u9996\u5148\u662flong\u7c7b\u578b\uff0c\u6240\u4ee5\u53d61\u4e2a\u5b57\u8282\uff0c\u63a5\u4e0b\u6765\u662fstring\u7c7b\u578b\uff0c\u6240\u4ee5\u67e5\u770b\u9996\u5b57\u8282\u6765\u83b7\u53d6\u6570\u636e\u957f\u5ea6\uff0c\u53d1\u73b0\u957f\u5ea6\u4e3a3\u4e2a\u5b57\u8282\uff0c\u56e0\u6b64\u7ee7\u7eed\u89e3\u7801\u63a5\u4e0b\u6765\u76843\u4e2a\u5b57\u8282\u4f5c\u4e3astring\u5b57\u6bb5…\u4e00\u76f4\u4ee5\u6b64\u7c7b\u63a8\u3002<\/p>\n
\u5b9e\u9645\u6570\u636e\u89e3\u8bfb<\/h2>\n
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\n\u6211\u5c06\u4f7f\u7528\u4e0d\u662favro\u7684console-consumer\u6765\u63d0\u53d6\u539f\u59cb\u6570\u636e\uff0c\u7136\u540e\u5c06\u5176\u901a\u8fc7xxd\u4f20\u8f93\u5e76\u6dfb\u52a016\u8fdb\u5236\u8868\u793a\u3002<\/p>\n
00000000: 0000 0000 0e00 0c30 3030 3030 3100 1454  .......000001..T\r\n00000010: 6869 7349 7352 4f4f 5400 3cef bdb1 efbd  hisIsROOT.<.....\r\n(\u4e2d\u7565)\r\n00000110: 6421 0002 f000 04ff f000 08ff ffff f00a  d!..............\r\n<\/code><\/pre>\n
\u56e0\u4e3a\u5728\u9014\u4e2d\u6709\u5f88\u591a\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u7684\u6d4b\u8bd5\uff0c\u6240\u4ee5\u6211\u9009\u62e9\u7701\u7565\u4e86\u8fd9\u90e8\u5206\u3002<\/p>\n
\u6211\u786e\u5b9e\u627e\u5230\u4e86\u53ef\u80fd\u4e0e1\u5b57\u8282\u30012\u5b57\u8282\u548c4\u5b57\u8282\u7684\u4e8c\u8fdb\u5236\u6570\u636e\u5bf9\u5e94\u7684\u90e8\u5206\u30020002 f000 04ff f000 08ff ffff f00a\u3002
\n\u539f\u59cb\u6570\u636e\u5206\u522b\u4e3af0\u3001fff0\u3001fffffff0\uff0c\u5e76\u4e14\u6bcf\u4e2a\u5b57\u6bb5\u957f\u5ea6\u6807\u5934\u5206\u522b\u4e3a02\u300104\u300108\u3002\u770b\u8d77\u6765\u5f88\u6b63\u786e\u3002\u6bcf\u4e2a\u5b57\u6bb5\u4e4b\u95f4\u4f3c\u4e4e\u90fd\u6709\u4e00\u4e2a00\u3002<\/p>\n
\u6362\u53e5\u8bdd\u8bf4\uff0c\u539f\u59cb\u6570\u636e\u5c42\u9762\u662f\u6b63\u786e\u7684\uff0c\u4f46\u662f\u5728\u901a\u8fc7avro-consumer\u8f93\u51fa\u65f6\u51fa\u73b0\u4e86d\u6216y\u4e4b\u7c7b\u7684\u4e71\u7801\u3002…\u6211\u77e5\u9053\u4e86\u8fd9\u4e00\u70b9\uff0c\u4f46\u5230\u5e95\u4e3a\u4ec0\u4e48\u4f1a\u53d8\u6210d\u6216y\u4ecd\u7136\u662f\u4e2a\u8c1c\u3002<\/p>\n
\u7531\u4e8e\u786e\u8ba4\u4e86CDC for Kafka\u80fd\u591f\u6b63\u786e\u5730\u5c06\u6570\u636e\u8f93\u5165\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u4ea7\u54c1\u9a8c\u8bc1\u7684\u76ee\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u51b3\u5b9a\u5728\u8fd9\u91cc\u6682\u65f6\u505c\u6b62\u3002<\/p>\n
\u66f4\u6539\u5386\u53f2<\/h2>\n
    \n
  • \n
      21-11-04<\/ul>\n<\/li>\n<\/ul>\n
      \u5404\u30d5\u30a3\u30fc\u30eb\u30c9\u306etype\u306fUnion\u5f62\u5f0f\u3067\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3068@tomotagwork\u3055\u3093\u3088\u308a\u6307\u6458\u3044\u305f\u3060\u304d\u3001\u672c\u6587\u306b\u53cd\u6620\u3057\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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