Mapred-site

将mapreduce.job.ubertask.enable的值设置为true 将mapreduce.job.ubertask.maxmaps的值设置为map任务数阀值9 将mapreduce.job.ubertask.maxreduces的值设置为reduce任务数阀值1 将mapreduce.job.ubertask.maxbytes的值设置为application的输入大小阀值，默认为dfs.block.size的值

HDFS 站点配置文件 用于配置 Hadoop 分布式文件系统（HDFS）的站点级设置。

Hive配置文件：hive_site.xml 供您参考，通过点击下方链接可以下载。

hdfs-site.xml 是 Hadoop 分布式文件系统 (HDFS) 的核心配置文件之一。 它包含了 HDFS 的各种配置参数，例如 NameNode 和 DataNode 的地址、端口、数据块大小等。 通过修改 hdfs-site.xml 文件，用户可以自定义 HDFS 集群的行为以满足特定需求。

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在配置Hadoop高可用集群时，核心配置文件core-site.xml至关重要。

虚拟内存与物理内存比例不足可能导致首次运行wordcount程序时出现问题。建议调整yarn-site.xml配置以解决此类问题。

在安装Hive后，如果发现缺少hive-site.xml文件，只需将该文件复制到conf目录下，并根据个人配置调整其中的相关内容即可。

Hadoop HA 高可用集群 yarn-site.xml master2 配置 该文件用于配置 Yarn 资源管理器 (ResourceManager) 的高可用性。在 Hadoop HA 集群中，通常有两台主节点 (master1 和 master2) 负责管理 Yarn 资源。 master2 节点的 yarn-site.xml 文件配置应与 master1 节点基本一致，但需要修改以下参数以反映其作为备用节点的角色： yarn.resourcemanager.hostname: 设置为 master2 节点的主机名。 yarn.resourcemanager.address: 设置为 master2主机名:8032。 yarn.resourcemanager.scheduler.address: 设置为 master2主机名:8030。 yarn.resourcemanager.webapp.address: 设置为 master2主机名:8088。 请确保以上参数值与实际环境相匹配。 通过正确配置 yarn-site.xml 文件，可以确保在 master1 节点故障时，master2 节点能够接管 Yarn 资源管理器的职责，从而保证集群的高可用性。

安装完Hive后，如果找不到hive-site.xml文件，可以将该文件复制到conf目录下，并根据个人配置调整其中的相关内容。