Cassandra Configuration and Operation : Cassandra Configuration Files : Other Cassandra Configuration Options
Other Cassandra Configuration Options
In addition to the options described in this section, there are other options in the cassandra.yaml file that you might want to change in certain circumstances. Here a list of the most common options:
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concurrent_reads: This value controls how many outstanding read operations are allowed at once. A recommended value is 16 times the number of data disks used. |
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concurrent_writes: This value controls how many outstanding write operations are allowed at once. A recommended value is 8 times the number of cores present on the machine. |
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rpc_port: This is the thrift port that applications such as Doradus connects to. You can change it from its default of 9160, but it should be the same on all nodes. (And you must configure Doradus to know what port to use.) |
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thrift_framed_transport_size_in_mb: This value controls the maximum size of a Thrift message that Cassandra will accept. The default (16MB) is often too small for Doradus applications that use “batch updates”. A good idea is to increase this to 160MB. |