Introduction Pentaho Analysis Services is called Mondrian, which is the name I’ll use for the remainder of this post. Mondrian is Pentaho’s OLAP server. In this post I’ll provide step-by-step instructions on how to install Mondrian 3.4.1 Ubuntu Linux 12.04 LTS x64. We’ll use MySQL as the database. Download Let’s first create a directory to …
Introduction The hadoop fs -ls command allows you to view the files and directories in your HDFS filesystem, much as the ls command works on Linux / OS X / *nix. Default Home Directory in HDFS A user’s home directory in HDFS is located at /user/userName. For example, my home directory is /user/akbar. List the …
Introduction hdfs dfsadmin -metasave provides additional information compared to hdfs dfsadmin -report. With hdfs dfsadmin -metasave provides information about blocks, including> blocks waiting for replication blocks currently being replication total number of blocks hdfs dfsadmin -metasave filename.txt Run the command with sudo -u hdfs prefixed to ensure you don’t get a permission denied error. CDH4 …
Introduction hdfs dfsadmin -report outputs a brief report on the overall HDFS filesystem. It’s a userful command to quickly view how much disk is available, how many datanodes are running, and so on. Command Run the command with sudo -u hdfs prefixed to ensure you don’t get a permission denied error. CDH4 runs the namenode …
I’ve been “trying” to use Google Wallet for a couple of weeks now, and I’ve pretty much given up. When it works it’s great…but that’s the problem. You never know when it’ll actually work. First, it’s anybody’s guess if an in-store reader will even work. The same reader may work in the morning, then completely …
Introduction HBase is a tabular-oriented database that runs on top of HDFS. It is modeled on Google’s BigTable. In this post, I’m going to install HBase in Pseudo mode, so please use these instructions for setting up a developer’s workstation, not for a production cluster. When should you use HBase HBase should be used when …
Introduction Starting and stopping services is a common part of Hadoop administration. Hadoop Region Server Start a Region Server sudo service hbase-regionserver start Stop a Region Server sudo service hbase-regionserver stop Check the Status of a Region Server sudo service hbase-regionserver status
Introduction Zookeeper provides cluster management for Hadoop. In this post, I’m going to install Zookeeper in Pseudo mode, so please use these instructions for setting up a developer’s workstation, not for a production cluster. Installation The zookeeper package should already be installed, but we’ll double check. sudo apt-get install zookeeper Next, we’ll install the Zookeeper …
Introduction You will need to know the location of binaries, configuration files, and libraries when working with HBase. Directories Configuration /etc/hbase/conf is the location for all of HBase’s configuration files. HBase uses Debian Alternatives, so there are a number of symlinks to the configuration files. /etc/hbase/conf is a symlink to /etc/alternatives/hbase-conf. /etc/alternatives/hbase-conf is a symlink …
Introduction You will need to know the location of binaries, configuration files, and libraries when working with Zookeeper. Zookeeper 3.4.3 is a part of Cloudera Distribution Hadoop (CDH4). Directories /etc/zookeeper/conf /etc/zookeeper/conf is the location for all of Zookeeper’s configuration files. Zookeeper uses Debian Alternatives, so there are a number of symlinks to the configuration files. …
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