mapreduce表-阿里云

DataWorks想在mapreduce中指定两个表的所有分区

使用 app_id='' 不可以指定所有的分区，您可以尝试使用通配符 "" 来代替空字符串，如 "app_id=''"。例如： InputUtils.addTable(TableInfo.builder().tableName("middleoffice_report...

DataWorks想在mapreduce中指定两个表的所有分区，有什么办法吗？

DataWorks想在mapreduce中指定两个表的所有分区，用 app_id=''不可以，有什么办法吗？job);InputUtils.addTable(TableInfo.builder().tableName("middleoffice_report_transaction_t_wideor...

Hadoop 分布式计算框架 MapReduce

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Hadoop学习：MapReduce实现两张表合并

一、✌题目要求record表：ID城市编号空气指数001032450020265500305743004042460050295600601637007058310080368300902349city表：城市编号城市名称01长沙02株洲03湘潭04怀化05岳阳目标表：ID城市名称空气指数001湘潭...

odps 的 MapReduce 必须指定输入表或分区吗

odps 的 MapReduce 必须指定输入表或分区吗？如果不需要指定，可以举例说明下是什么样的场景吗？谢谢

MapReduce生成odps表记录中文变成字母问题？

例如：Record result = context.createOutputRecord();result.setString(0,"英特尔");................context.write(result);输出的表记录”英特尔“变成“=D3=A2=CC=D8=B6=FB”，对应字段...

您好，请问MaxCompute（原ODPS）写mapreduce ，如果一个表的字段是分区字段，那这个字段根本拿不到是吗？我用命令 record.getString("relation") 我这个是分区字段，报错 aused by: java.lang.IllegalArgumentException: No such column:relation

您好，请问MaxCompute（原ODPS）写mapreduce ，如果一个表的字段是分区字段，那这个字段根本拿不到是吗？我用命令 record.getString("relation") 我这个是分区字段，报错aused by: java.lang.IllegalArgumentExceptio...

Mongodb的mapreduce如何实现只更新现有表的部分字段

MapRedue 的输出{"out", option }option可以是下面几个选项：•"collection name" – mapReduce的输出结果会替换掉原来的collection，collection不存在则创建•{ replace : "collection name" } – 同上...

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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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EMR实时计算实践