WebNov 10, 2024 · Reply. 1) First solution is to try changing the ownership of the directory and restart. If this works then no need to change anything. 2) If #1 doesn't work and you are ok to remove this volume, then remove the directory from "dfs.datanode.data.dir" and let the value of 'dfs.datanode.failed.volumes.tolerated' remain 0. WebNov 25, 2015 · 2. I have a hadoop cluster with 1 name node and 4 data nodes, and the replication value in HDFS-site.xml was set to 3. I recently replaced a data node machine …
Re: URGENT : Datanode started but not not live (dead)
WebNov 25, 2024 · 1.1 文件io寻址过程. 为了更好的阐述Haystack架构,这里简单回顾一下linux下文件io寻址的过程。. linux里所有文件系统抽象为VFS(虚拟文件系统),每个file结构体都有一个指向dentry结构体的指针, “dentry”是directory entry(目录项)的缩写。. 我们传给 open、stat等函数 ... WebApr 15, 2013 · The process ID - 16267 is the Datanode process. All other checkpoints have passed. So this seems weird. The same thing happens on the other node in the cluster. Any insight into this behavior and if this is something that needs fixing would be helpful. hadoop cloudera Share Improve this question Follow asked Apr 15, 2013 at 15:06 Sumod cubic inches to ft3
frequently getting stale alerts for Datanodes - Stack Overflow
WebJan 20, 2024 · 1 Answer. dfs.namenode.stale.datanode.interval < last contact < (2 * dfs.namenode.heartbeat.recheck-interval) In the NameNode UI Datanodes tab, a stale datanode will stand out due to having a larger value for the Last contact among live datanodes (also available in JMX output). When a datanode is stale, it will be given … Web其中 'dn', 'datanode'表示在所有DN上执行,'cn', 'coordinator'表示在所有CN上执行, all表示在所有的CN和所有的DN上执行。 第二个参数:需要发往远程节点执行的SQL语句,函数内部会对SQL语句中查询的对象进行校验,不支持用户表、分布式表和自定义的多结果 … WebMay 15, 2015 · "Datanodes 3/3 started" means 3 datanodes process running Datanodes status "1 live / 0 Dead / 0 Decommissioning" means your namenode is able to communicate with one node. It seems to be a network problem (make sure HDFS ports are open on your firewall). The alive Datanode is probably on same machine as your Namenode. Share … cubic inches to gallon conversion