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From "Stu Hood (JIRA)" <>
Subject [jira] Created: (CASSANDRA-1035) Implement User/Keyspace throughput Scheduler
Date Thu, 29 Apr 2010 17:13:55 GMT
Implement User/Keyspace throughput Scheduler

                 Key: CASSANDRA-1035
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Stu Hood

To support multiple applications on top of a single Cassandra cluster (and to protect against
badly behaving clients) having a very simple scheduler for MUTATION-STAGE and READ-STAGE would
be very beneficial.

Since all tasks are short lived, a sufficient scheduler would probably only need to manage
the queue of incoming requests, and weight them based on an assigned ID. The ID could be dynamically
determined by using ip, userid or keyspace for instance, and then each Runnable would be assigned
an ID.

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