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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-3162) use weak references to SlabAllocator regions
Date Thu, 08 Sep 2011 17:45:09 GMT
use weak references to SlabAllocator regions

                 Key: CASSANDRA-3162
             Project: Cassandra
          Issue Type: Improvement
    Affects Versions: 1.0
            Reporter: Jonathan Ellis
            Assignee: Jonathan Ellis
            Priority: Minor
             Fix For: 1.0

Yang points out on CASSANDRA-2252,

"Conceivably, one region would contain bytebuffer values of similar age. as more updates come
in, all the columns in older regions are likely to have all died out, thus allowing us to
free the entire region before flushing happens."

So it's a bit of a corner case optimization, but easy to do and safe.

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