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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2013/08/26 04:18:51 UTC

[jira] [Created] (CASSANDRA-5935) Allow disabling slab allocation

Jonathan Ellis created CASSANDRA-5935:
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             Summary: Allow disabling slab allocation
                 Key: CASSANDRA-5935
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5935
             Project: Cassandra
          Issue Type: New Feature
          Components: Core
            Reporter: Jonathan Ellis
            Assignee: Jonathan Ellis
            Priority: Minor
             Fix For: 1.2.9


Arena allocation (CASSANDRA-2252) dramatically improves garbage collection performance, but it can limit the number of tables that can be practically defined in the schema since you have a minimum of 1MB of heap per table.

Although having more than dozens or hundreds of tables defined is almost certainly a Bad Idea (just as it is a design smell in a relational database), it's relatively straightforward to allow disabling the SlabAllocator.

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