一.引言parquet 文件常见与 Flink、Spark、Hive、Streamin、MapReduce 等大数据场景，通过列式存储和元数据存储的方式实现了高效的数据存储与检索，下面介绍 Flink 场景下如何读取 Parquet。Parquet 相关知识可以参考：Spark - 一文搞懂 parquet。编辑二.Parquet Read By Scala1.依赖准备与环境初始化import ....

问答 2022-07-22 来自：开发者社区

用flink 写 parquet 到S3 ，样例类的顺序，和 S3存储的parquet 的字段顺序不

用flink 写 parquet 到S3 ，样例类的顺序，和 S3存储的parquet 的字段顺序不一致。S3存储parquet 的顺序好是按照字段名称的字母顺序排列的(例如：样例类是id,colid,status，到S3就变成了 colid,id,status 了)，你们有遇见过这种情况吗？

问答 2021-12-08 来自：开发者社区

Flink DDL 写 Hive parquet 是否支持 snappy压缩？

Flink DDL的方式写 Hive parquet 格式，是否支持 snappy压缩，如果支持请问下参数是什么？ *来自志愿者整理的flink邮件归档

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实时计算Flink版

阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，完全兼容开源的Apache Flink，比开源性能提升2～3倍，提供了完整的告警、监控、日志的解决方案、提升开发效率且无运维成本，并有社区专家提供技术支持。

立即开通

产品控制台

产品文档

实时同步

MySQL 到 Hologres

Kafka 到 Hologres

功能对比

开源Flink对比

成本优化

作业自动调优