hadoop任务的相关内容

文章 2024-05-16 来自：开发者社区

实时计算 Flink版产品使用合集之如果产品是基于ak的，可以提交sql任务到ecs自建hadoop集群吗

问题一：实时计算flink产品访问 starrocks emr serverless 要开启公网访问么？实时计算flink产品访问 starrocks emr serverless 要开启公网访问么？参考回答：不用，vpc就行。关于本问题的更多回答可点击原文查看：https://developer.aliyun.com/a...

文章 2023-12-29 来自：开发者社区

Hadoop任务scan Hbase 导出数据量变小分析

背景：一个MR任务scan hbase 导出hive 文件，但是发现某些天数据突然变小，而且里面数据行数也变小(hbase里面的数据只增不减) 原因定位：日志非常隐蔽，需要去MR 任务里面看 mapper 里面的log 日志，发现有error 日志，进一步定位发现有mysql 连接数过多，可以看到如下代码非常关键(这个是每次都需要去读取mysql 的配置信息) 如果mapper 数比较多，就需要....

文章 2023-12-29 来自：开发者社区

Hadoop MR 任务运行时日志分析

1.任务状态，只有map 节点2.实际日志分析

问答 2023-11-22 来自：开发者社区

这个flink产品是基于ak的，可以提交sql任务到ecs自建hadoop集群吗？

阿里云文档 2023-03-31

问题描述Dataphin管道任务失败，报错“error occurred where call hadoop api”。问题原因Hive表字段改动导致。Hive表字段改动是要更新管道任务配置的，Hive输出组件的配置要求Hive表字段全部映射，否则就不允许提交，如果是TEXTFILE格式的表，可以追...

问答 2023-01-09 来自：开发者社区

请问要将HADOOP的MR任务迁移到dataworks里面要如何做？

阿里云文档 2022-10-28

如何解决Dataphin脚本任务运行报错

问题描述Dataphin脚本任务运行报错“Error while processing statement: FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask“。解决方案上...

阿里云文档 2022-07-20

问题描述Dataphin管道任务运维补数据只有20220430才会报错“org.apache.hadoop.security.AccessControlException: Permission denied by sticky bit”，其他日期补数据不会报错。问题原因由于hive使用的是 had...

问答 2022-04-02 来自：开发者社区

hadoop + ha集群提交pi任务的时候为什么一直在hang的状态呀？

文章 2022-02-17 来自：开发者社区

Hadoop2.6.0的FileInputFormat的任务切分原理分析（即如何控制FileInputFormat的map任务数量）

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更新时间 2024-10-14 09:06:01

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开源大数据平台 E-MapReduce

开源大数据平台 E-MapReduce（简称“EMR”）是云原生开源大数据平台，向客户提供简单易集成的Hadoop、Hive、Spark、Flink、Presto、ClickHouse、StarRocks、Delta、Hudi等开源大数据计算和存储引擎服务。

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最佳实践

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