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数据准备和预处理在一个深度学习训练过程中扮演着非常重要的角色，它影响着模型训练的速度和质量。而 TensorFlow 对于 HDFS 的支持，将大数据与深度学习相集成，完善了从数据准备到模型训练的完整链条。在阿里云容器服务深度学习解决方案中，为 TensoFlow 提供了 OSS、NAS 和 HD...

Hadoop 分布式文件系统 HDFS

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datenode节点超时时间设置，Hadoop启动不正常,HDFS冗余数据块的自动删除,NameNode安全模式问题,ntp时间服务同步,机架感知配置

1.Hadoop datanode节点超时时间设置 datanode进程死亡或者网络故障造成datanode无法与namenode通信，namenode不会立即把该节点判定为死亡，要经过一段时间，这段时间暂称作超时时长。HDFS默认的超时时长为10分钟+30秒。如果定义超时时间为timeout，则超...

E-MapReduce集群中HDFS服务集成Kerberos

本文介绍在E-MapReduce集群中HDFS服务集成Kerberos。前置: 创建E-MapReduce集群，本文以非HA集群的HDFS为例 HDFS服务在hdfs账号下启动 HDFS软件包路径/usr/lib/hadoop-current，配置在/etc/emr/hadoop-conf/ 一、...

E-MapReduce集群启停HDFS/YARN服务

启停HDFS服务 HDFS服务启停，下面脚本需要在master节点运行，切需要在hdfs账号下。su hdfs 启动HDFS 执行下面脚本 #!/bin/bash worker_cnt=`cat /etc/hosts | grep emr-worker | grep cluster | wc -l`...

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