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I would like learn more on cassandra stress tool , like how I can do the stress test and study the result. When cassandra-stress is executed from the cmd where is the keyspace made ,How to view them ?
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The cassandra-stress tool is a Java-based stress testing utility for basic benchmarking and load testing a Cassandra cluster. Data modeling choices can greatly affect application performance. Significant load testing over several trials is the best method for discovering issues with a particular data model.
The cassandra-stress tool also supports a YAML-based profile for defining specific schema with potential compaction strategies, cache settings, and types. Sample files are located in: Package installations: /usr/share/doc/cassandra/examples.
Cassandra is excellent for write operations but not so fast on read operations. Both are rather fast but Cassandra does write operation faster. Cassandra has benefits being +HA (no SPOF) + having tuneable Consistency. Cassandra is very fast writing bulk data in sequence and reading them sequentially.
Cassandra stress is a tool provided with cassandra for stress testing. go through http://www.datastax.com/documentation/cassandra/1.2/cassandra/tools/toolsCStress_t.html for more info
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Since the original question has cassandra-2.0 tagged, I want to add the link to the documentation of the newer version of the stress tool:
http://docs.datastax.com/en/cassandra/2.1/cassandra/tools/toolsCStress_t.html
The improved stress test tool introduced with Casssandra 2.1 can be used with Cassandra 2.0 clusters. It uses Yaml profiles and adds the ability to stress test your actual schema, with queries that you specify. There is an excellent introduction to it here: http://www.datastax.com/dev/blog/improved-cassandra-2-1-stress-tool-benchmark-any-schema
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