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## Hadoop | ||
### HDFS | ||
NameNode 存储文件的元数据,记录文件属性以及文件块所在的 DataNode 信息。 | ||
DataNode 具体存储数据及校验和。 | ||
SecondaryNameNode NameNode 的备份节点。 | ||
### YARN | ||
ResourceManager 管理所有集群的资源。处理客户端的请求,监控 NodeManager,启动监控 ApplicationMaster。 | ||
NodeManager 管理单个节点的资源。处理来自 ResourceManager 的命令,处理来自 ApplicationMaster 的命令。 | ||
ApplicationMaster 负责管理单个运行任务。 | ||
Container 任务运行的容器。 | ||
### MapReduce | ||
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## Flink | ||
JobManager 对作业进行调度,分发给 TaskManager。 | ||
TaskManager 指定任务。 |
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