Purpose The MongoDB Connector for Hadoop is a library which allows MongoDB (or backup files in its data format, BSON) to be used as an input source, or output destination, for Hadoop MapReduce tasks. It is designed to allow greater…
When the first mongos connects to a set of config servers, it initializes the sharded cluster with a default chunk size of 64 megabytes. This default chunk size works well for most deployments; however, if you notice that automatic…
MongoDB supports tagging a range of shard key values to associate that range with a shard or group of shards. Those shards receive all inserts within the tagged range. The balancer obeys tagged range associations, which enables the following deployment…
Once you’re done with MySQL Installation from http://dbversity.com/mysql-rpm-installation/ You can set password for MySQL root ID as below. MySQL installs with no password protection on root access (blanks) We use this method to set it to Winter06 and GPA will…
What’s a Stored Function If procedural programming is new to you, you may be wondering what the difference is between a Stored Procedure and a Stored Function. Not too much really. A function always returns a result, and can be…
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FYI Session Title Watch View Unlocking Hadoop’s Potential Video Enterprise Hadoop for Pools, Ponds, Clouds and Beyond Video Apache Hadoop YARN: Present and Future Video Slides YARN: The Key to Overcoming the Challenges of Broad-based Hadoop Adoption Video Slides One…
Running Hadoop on RHEL Linux (Multi-Node Cluster) Here’s we’ll see how to set-up multi-node Apache Hadoop cluster backed by the Hadoop Distributed File System (HDFS), running on RHEL Linux. Hadoop is a framework written in Java for running applications on…
If you’re using MySQL Replication, in few cases you may require to skip a particular SQL statement from replicating – which is to be executed on Master and should not be on the Slave. Though, its not a good practice!…
Please get the required binaries from the below link and copy to your server. http://docs.mongodb.org/manual/administration/install-on-linux/ If MongoDB installed successfully, you’ll usually see the below Mongo binaries in the dbpath usually */opt/mongodb/bin* folder which will be useful to start the Mongo…