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文章 2023-07-11 来自：开发者社区

从零开始构建一个电影知识图谱，实现KBQA智能问答[下篇]：Apache jena SPARQL endpoint及推理、KBQA问答Demo超详细教学

从零开始构建一个电影知识图谱，实现KBQA智能问答[下篇]：Apache jena SPARQL endpoint及推理、KBQA问答Demo超详细教学效果展示： 1.Apache jena SPARQL endpoint及推理在上一篇我们学习了如何利用 D2RQ 来开启 endpoint 服务，但它有两个缺点：不支持直接将 RDF 数据通过 endpoint 发布到网...

问答 2021-12-07 来自：开发者社区

Apache Flink常见问题汇总【精品问答】

hi 我这面在使用sql api解析kafka json数据，在创建表的时候发现json数据解析的时候有下面两项，这两项如果开启那么解析失败的数据是会被丢掉吗，有没有方式可以把解析失败的数据打到外部存储 json.ignore-parse-errors son.fail-on-missing-field*来自志愿者整理的flink邮件归档

问答 2021-12-06 来自：开发者社区

Apache Flink常见问题汇总【精品问答】

我看1.11的java.sql.Timestamp 对应的是Flink的TIMESTAMP(9)，跟之前默认的TIMESTAMP(3)有区别，而且之前1.10的Timestamp(3)是带时区UTC的，现在这个类型不带时区了。想问下这个具体调整应该如何适配？ *来自志愿者整理的flink邮件归档

问答 2020-05-19 来自：开发者社区

Apache Flink是由Apache软件基金会开发的开源流处理框架，其核心是用Java和Scala编写的分布式流数据流引擎。Flink以数据并行和流水线方式执行任意流数据程序，Flink的流水线运行时系统可以执行批处理和流处理程序。此外，Flink的运行时本身也支持迭代算法的执行。开发者社区收集了社群提问频率最高的QA，欢迎大家查看~ 1、各位大佬，flink做filter，只过滤出指定字....

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阿里云全托管 SelectDB 实时数仓服务，100%兼容 Apache Doris。广泛应用于实时报表分析、即席多维分析、日志检索分析、数据联邦与查询加速等场景，为客户提供极致性能、简单易用的数据分析服务。

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