ResourceManager High Availability (RM高可用) Introduction(简介) Architecture(架构) RM Failover(RM 故障切换) Recovering prevous active-RM's state(恢复之前活动的RM的状态) Deployment(部署) Configurations(配置) Admin commands(管理命令) ResourceManager Web UI services(RM Web UI服务) We…

The fundamental idea of YARN is to split up the functionalities of resource management and job scheduling/monitoring into separate daemons. The idea is to have a global ResourceManager (RM) and per-application ApplicationMaster (AM). An application i…

MapReduce Tutorial(个人指导) Purpose(目的) Prerequisites(必备条件) Overview(综述) Inputs and Outputs(输入输出) MapReduce - User Interfaces(用户接口) Payload(有效负载) Mapper Reducer Partitioner Counter Job Configuration(作业配置) Task Execution & Environment(任务执行和环境) Memory Man…

HDFS Architecture HDFS Architecture(HDFS 架构) Introduction(简介) Assumptions and Goals(假设和目标) Hardware Failure(硬件失效是常态) Streaming Data Access(支持流式访问) Large Data Sets(大数据集) Simple Coherency Model(简单一致性模型) "Moving Computation is Cheaper than Moving Data&q…

HDFS Architecture HDFS Architecture(HDFS 架构) Introduction(简介) Assumptions and Goals(假设和目标) Hardware Failure(硬件失效是常态) Streaming Data Access(支持流式访问) Large Data Sets(大数据集) Simple Coherency Model(简单一致性模型) “Moving Computation is Cheaper than Moving Data”(…

Hadoop Cluster Setup Purpose Prerequisites Installation Configuring Hadoop in Non-Secure Mode Configuring Environment of Hadoop Daemons Configuring the Hadoop Daemons Monitoring Health of NodeManagers Slaves File Hadoop Rack Awareness Logging Operati…

一.故障现象 两个节点的ResourceManger频繁在active和standby角色中切换.不断有active易主的告警发出 许多任务的状态没能成功更新,导致一些任务状态卡在NEW_SAVING无法进入调度(还有许多资源空闲) 看了下ResourceManger的日志,发现大量以下错误: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss zk:java…

转自:http://www.ibm.com/developerworks/cn/opensource/os-cn-hadoop-yarn/,非常感谢分享! 对于业界的大数据存储及分布式处理系统来说,Hadoop 是耳熟能详的卓越开源分布式文件存储及处理框架,对于 Hadoop 框架的介绍在此不再累述,读者可参考 Hadoop 官方简介.使用和学习过老 Hadoop 框架(0.20.0 及之前版本)的同仁应该很熟悉如下的原 MapReduce 框架图: 图 1.Hadoop 原 MapReduce…

Spark官方文档翻译,有问题请及时指正,谢谢. Overview页 http://spark.apache.org/docs/latest/index.html Spark概述 Apache Spark 是一个快速的,分布式集群计算系统.它提供了高等级的针对 Java, Scala, Python and R的API接口, 他还是一个优秀的图处理引擎. 它还支持一套高级的工具集: Spark SQL,Sql和结构化数据处理: MLlib ,机器学习: GraphX ,图处理: 还有 Spark…

Introduction This guide provides an overview of High Availability of YARN’s ResourceManager, and details how to configure and use this feature. The ResourceManager (RM) is responsible for tracking the resources in a cluster, and scheduling applicatio…