其实是datanode起不来
hadoop 报错：could only be replicated to 0 nodes, instead of 1
could only be replicated to 0 nodes, instead of 1
hadoop 运行任务一段时间报这个错误
解决方法：
删除tmp 文件
重启集群（采用下面的方法）
bin/hadoop-daemon.sh start namenode
bin/hadoop-daemon.sh start datanode
bin/hadoop-daemon.sh start secondarynamenode
bin/hadoop-daemon.sh start jobtracker
bin/hadoop-daemon.sh start tasktracker
tasktracker 可能启动不成功。。。问题查看另一篇文章
下面还有一种解决方案，但是我是先尝试下面那种，再尝试上面那种成功了。
相关推荐
6、启动时报错java.io.IOException: File jobtracker.info could only be replicated to 0 nodes, instead of 1： 解决方法：首先，检查防火墙是否关闭，是否对jobtracker.info文件进行了acl权限设置，或者是否已经...
在使用Hadoop进行数据处理时，可能会出现"can only be replicated to node 0, instead of 1"的错误提示。解决办法是，释放更多的磁盘空间。这个错误可能是由于磁盘空间不足导致的。 四、INFO mapred.JobClient: map...
问题描述：在hadoop集群启动时，slave总是无法启动datanode，并报错“could only be replicated to 0 nodes, instead of 1”。 解决方法： 1. 删除所有节点的数据文件：删除所有节点的dfs.data.dir和dfs.tmp.dir...
- **错误现象2：could only be replicated to 0 nodes, instead of 1** - 原因：HDFS的副本复制出现问题。 - 解决方法：在NameNode上执行`hadoop namenode –format`命令重新格式化HDFS，但在操作前，要删除...
DB - Paxos Replicated State Machines as the Basis of a High-Performance.pdf Conventional wisdom holds that Paxos is too expensive to use for high-volume, high-throughput, data-intensive applications....
I fixed a bug where a dataset could be put out of search mode by the TIB_Grid calling ValidateRows and causing the dataset to open when it wasn't being expected to. I fixed a bug in the handling of a...
duction to Exchange Server 2010, not only from the perspective of a general tech- nology overview, but also to note what is truly new in Exchange Server 2010 that made it compelling enough for ...
It manages replicated data at great scale, both in terms of size of data and volume of transactions. It assigns globally consistent real-time timestamps to every datum written to it, and clients can ...
- **Replication Type:** Synchronous data replication might be necessary to meet the business requirements, while asynchronous replication could be used to avoid performance impact on the primary site....
GThème COMINSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUEA comprehensive study of Convergent and Commutative Replicated Data TypesMarc Shapiro, INRIA & LIP6, Paris, France Nuno ...
This new version allows us to integrate shared experiences such as multiplayer augmented reality and persistent AR that is tied to a specific location so that the same information can be replicated ...
1. 近实时数据摄入与查询：Mesa能够在数据到达后迅速将其存储并立即提供给查询。这种特性对于需要实时数据处理的业务场景非常关键，例如谷歌的广告业务，其中对广告的性能和效果的实时监控对于业务的决策和调整至关...
From Python programming good practices to the advanced use of analysis packages, this book teaches you how to write applications that will perform complex geoprocessing tasks that can be replicated ...
为了解决这个问题，需要解决两个主要问题：1. 需要知道在节点A（存活节点）中在此期间修改了哪些块；2. 需要知道节点B（作为主节点崩溃并重新加入集群的节点）修改了哪些块。 重新同步是指在分布式存储系统中，当...
1. **网络基础**：在UE4中，网络功能主要由Unreal Network Messaging System (UNet)提供，它负责处理游戏状态的同步、客户端与服务器之间的通信以及错误处理。 2. **设置服务器**：首先，你需要设置一个Replicated...
PART 1: THE OVERVIEW 1 Introducing Kubernetes 2 First steps with Docker...15 Automatic scaling of pods & cluster nodes 16 Advanced scheduling 17 Best practices for developing apps 18 Extending Kubernetes
11. **OpenStack**: Featuring 80 hypervisor nodes, 3 controller nodes, and 1 petabyte of replicated storage. #### Research Storage at Cambridge The RCS offers different storage options tailored to ...
The background music is melodious, ethereal... The original time span of it is 3 minutes so it has to be replicated by applications to 40 minutes for a better stereophonic auditory experience to clients.