hadoop集群datanode 的相关内容

问答 2022-02-15 来自：开发者社区

Hadoop集群HDFS测试文件上传，小文件可以，大文件DataNode日志警告超出阈值时间

三台服务器，hdsf和yarn都正常启动，几K的小文件正常传输，188M的大文件DataNode日志一直在跑 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write packet to mirror took 1107ms (threshold=300ms) 然后主机完成上传报错 WARN h.....

文章 2021-12-10 来自：开发者社区

Hadoop集群改名导致无法启动DataNode

之前集群能够启动各个节点的。因为最近集群改名了，启动NameNode可以的。启动DataNode没有任何提示。进入hadoop logs目录查找hadoop-root-datanode-bd-cluster1.log文件发现下面的错误。错误关键信息： org.apache.hadoop.hdfs.server.common.Storage: Failed to add storage direc....

问答 2021-12-05 来自：开发者社区

Hadoop集群中的DataNode进程的作用是什么呢？

文章 2017-11-03 来自：开发者社区

删除恢复Hadoop集群中的DataNode

有时候因为做临时调整可能需要删除hadoop集群中的DataNode，具体方法如下：首先在/etc/hadoop/conf/dfs.exclude 中添加要删除节点的机器名在控制台页面中看见显示了一个Dead Datanodes 使用命令刷新节点信息： [hdfs@hmc ~]$ hadoop dfsadmin -refreshNodes 查看hdfs的使...

文章 2017-09-01 来自：开发者社区

hadoop集群运行jps命令以后Datanode节点未启动的解决办法

出现该问题的原因：在第一次格式化dfs后，启动并使用了hadoop，后来又重新执行了格式化命令（hdfs namenode -format)，这时namenode的clusterID会重新生成，而datanode的clusterID 保持不变。 1：其实网上已经有解决办法了，这里自己脑补一下，也可以让别人看到我是怎么解决的。出现这个问题主要是和配置这个文件相关：core-site.xml； ...

文章 2017-08-02 来自：开发者社区

Hadoop集群datanode磁盘不均衡的解决方案

一、引言： Hadoop的HDFS集群非常容易出现机器与机器之间磁盘利用率不平衡的情况，比如集群中添加新的数据节点，节点与节点之间磁盘大小不一样等等。当hdfs出现不平衡状况的时候，将引发很多问题，比如MR程序无法很好地利用本地计算的优势，机器之间无法达到更好的网络带宽使用率，机器磁盘无法利用等等。二、问题：因业务需要搭建一个新hadoop集群，并将老的hadoop集群中的数据迁移至新的ha....

文章 2012-07-02 来自：开发者社区

【原创】hadoop集群增加datanode

目前环境说明：主机名 IP地址用途 hadoop1 192.168.3.65 &nbs...

文章 2012-06-29 来自：开发者社区

【原创】hadoop集群删除datanode

环境说明：主机名 IP地址用途 master 192.168.5.54 &...

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