Advanced Sharding Features in MongoDB 2.4. Set Up MongoDB for Analyzer - Pentaho Corporation. Home > Documentation > 5.2 > Create and Refine Advanced Data Models > 0S0 > Set Up MongoDB for Analyzer This file and accompanying files are licensed under the MindTouch Master Subscription Agreement (MSA).
A complete copy of the MSA is available at Author: Pentaho Documentation Team This is a quick set of instructions for setting up an environment to use Analyzer with MongoDB using the foodmart sample data. Prerequisite: Before you begin, you should have installed Pentaho BA Server and MongoDB. Import Foodmart Sample Data Now that you have MongoDB and the latest Pentaho software installed, it is time to import the Foodmart sample data. Create a directory called foodmart_data in your C:\ directory. Upload a Schema After completion of your data model, the easiest way to upload the schema into the Pentaho BA server repository is through the user console.
MongoDB-sharding-guide.pdf. MongoDB Limits and Thresholds — MongoDB Manual 2.6.7. This document provides a collection of hard and soft limitations of the MongoDB system.
BSON Documents BSON Document Size The maximum BSON document size is 16 megabytes. The maximum document size helps ensure that a single document cannot use excessive amount of RAM or, during transmission, excessive amount of bandwidth. To store documents larger than the maximum size, MongoDB provides the GridFS API. Nested Depth for BSON Documents MongoDB supports no more than 100 levels of nesting for BSON documents. Namespaces Namespace Length Each namespace, including database and collection name, must be shorter than 123 bytes.
Number of Namespaces The limitation on the number of namespaces is the size of the namespace file divided by 628. A 16 megabyte namespace file can support approximately 24,000 namespaces. Size of Namespace File Namespace files can be no larger than 2047 megabytes. By default namespace files are 16 megabytes. Indexes Index Key Limit Number of Indexes per Collection Index Name Length. Configuration File Options — MongoDB Manual 2.6.7. You can control mongod and mongos instances at runtime using a configuration file.
The configuration file contains settings that are functionally equivalent to the mongod and mongos command-line arguments but are easier to manage, especially on large-scale deployments. Configuration files allow commenting to describe the reasoning behind a server’s settings. If you installed from a package and have started MongoDB using your system’s control script, you are already using a configuration file. MongoDB Limits and Thresholds — MongoDB Manual 2.6.7. This document provides a collection of hard and soft limitations of the MongoDB system.
BSON Documents BSON Document Size The maximum BSON document size is 16 megabytes. The maximum document size helps ensure that a single document cannot use excessive amount of RAM or, during transmission, excessive amount of bandwidth. Pentaho Data Integration and Database Shards. So I recently had a situation where I needed to run the same transformation over multiple database shards, which turns out to be relatively easy to do with the right mix of transformations and jobs.
This post will walk through the steps needed so you can do the same thing. Go ahead and download the sample files: shard_example – it includes a text file with a sample set of parameters as well as the transformations/jobs that use them. Thanks to PDI’s database connections being able to take parameters, all that is needed is the connection information for each of the shards. This can come from many sources (a table input step, text file, etc.). For this post’s example, we’ll use a text file with the database and the server names. MongoDB Output - Pentaho Data Integration - Pentaho Wiki. MongoDb output is an output step that allows data to be written to a MongoDB collection.
This step and its documentation are currently under development. This section describes the basic usage of the step - in particular, how to connect to MongoDB and configure the available options for writing data. 2.1 Configuring Mongo DB connection details The screenshot below shows the GUI dialog for the MongoDb output step. The Host name or IP address field and Port field hold basic connection details. Multiple hosts can be used by specifying the "Use all replicate set members/mongos", or via providing a comma-separated list of hostnames, and is supported in PDI 4.4.2 and later.
Pentaho - Mongodb Sharding not working. Add Shards to a Cluster — MongoDB Manual 2.6.7. You add shards to a sharded cluster after you create the cluster or any time that you need to add capacity to the cluster.
If you have not created a sharded cluster, see Deploy a Sharded Cluster. In production environments, all shards should be replica sets. Considerations Balancing. Deploy a Sharded Cluster — MongoDB Manual 2.6.7. Use the following sequence of tasks to deploy a sharded cluster: Warning Sharding and “localhost” Addresses If you use either “localhost” or 127.0.0.1 as the hostname portion of any host identifier, for example as the host argument to addShard or the value to the --configdb run time option, then you must use “localhost” or 127.0.0.1 for all host settings for any MongoDB instances in the cluster.
If you mix localhost addresses and remote host address, MongoDB will error. Start the Config Server Database Instances The config server processes are mongod instances that store the cluster’s metadata. In production deployments, you must deploy exactly three config server instances, each running on different servers to assure good uptime and data safety. Important All members of a sharded cluster must be able to connect to all other members of a sharded cluster, including all shards and all config servers.