hadoop cluster setup

Hadoop + Hbase cluster data migration Data migration or backup is a possible issue for any company. The official website also provides several solutions for hbase data migration. We recommend using Hadoop distcp for migration. It is suitable for data migration between large data volumes or cross-version clusters. Version Hadoop2.7.1 Hbase0.98.12 A problem found d

How to makeProgramDistributed running in a hadoop cluster is a headache. Someone may say that right-click "run on hadoop" in the eclipse class file. Note: by default, "run on hadoop" in Eclipse only runs on a single machine, because in order to make programs run in a distributed manner in a

HDFs cluster, do not use the same version of Hadoop, and avoid Hadoop itself causing data errors.(iii) file system inspectionPeriodically run the HDFs tool on the entire file system to proactively find missing or damaged blocks.It is recommended to do it once a day.[Email protected] ~]$ Hadoop fsck/... Omit the output

Hadoop learning notes (1) Environment setup My environment is: Install hadoop1.0.0 in ubuntu11.10 (standalone pseudo-distributed) Install SSH Apt-Get Install SSHInstall rsyncApt-Get install rsyncConfigure SSH password-free LoginSsh-keygen-t dsa-p'-f ~ /. Ssh/id_dsaCat ~ /. Ssh/id_dsa.pub> ~ /. Ssh/authorized_keysVerify whether it is successfulSSH localhostInstall hadoop1.0.0 and JDKCreate a Linux terminal

Hbase-site.xml3. Exit Safe Mode-safemodeHDFs dfsadmin--safenode Leave4.hadoop cluster boot not successful-format multiple timesClose the cluster, delete the Hadoopdata directory, and delete all the log files in the Logs folder under the Hadoop installation directory. Reformat and start the

[TOC] Redis Note-taking (ii): Java API use with Redis distributed cluster environment using Redis Java API (i): Standalone version of Redis API usageThe Redis Java API operates through Jedis, so the first Jedis third-party libraries are needed, because the MAVEN project is used, so the Jedis dependency is given first:Basic code exampleThe commands that Redis can provide, Jedis are also provided, and are very similar in use, so here's just some c

Original? Blog. csdn. netyang_bestarticledetails41280553 the following sections describe how to configure a Hadoop cluster. The configuration file's Hadoop configuration is done through two important configuration files under the conf directory: the default configuration for hadoop-default.xml read-only. Configuration

After the accumulation of the front, today finally realized the cluster environment to deploy Hadoop, and successfully ran the official example. Work as follows: Two machines: Namenode: Internet Small, 3G memory, machine name: yp-x100e,ip:192.168.101.130. Datanode: Virtual machine, Win7 download VMWare10 virtual UBUNTU14, virtual machine name: ph-v370,ip:192.168.101.110 Ensure that you can ping each ot

Apache Ambari is a Web-based open-source project that monitors, manages, and manages Hadoop lifecycles. It is also a project that selects management for the Hortonworks data platform. Ambari supports the following management services: Apache HBaseApache HCatalogApache Hadoop HDFSApache HiveApache Hadoop MapReduceApache OozieApache PigApache SqoopApache TempletonA

production cluster changeexecuted separately on 5 servers, the following commandvim/app/hadoop/etc/hadoop/hadoop-env.shAdd the following parametersExport hadoop_opts= "-xx:+useparallelgc-xmx4g" In order to facilitate future operation, special record the cluster restart ope

Original, reproduced please specify. Thank youShell launches Hadoop cluster1: Clear Boot order1) Start zookeeper cluster (in CentOS 4-02,centos6-02,centos7-02 respectively)app/zookeeper-3.4.5/bin/zkserver.sh Start//startup processapp/zookeeper-3.4.5/bin/zkserver.sh Status//view state2) Start Journalnode (respectively in CentOS 4-02,centos6-02,centos7-02)app/hadoop