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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2013/06/19 15:32:21 UTC

[jira] [Created] (CASSANDRA-5661) Discard pooled readers for cold data

Jonathan Ellis created CASSANDRA-5661:
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             Summary: Discard pooled readers for cold data
                 Key: CASSANDRA-5661
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5661
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 1.2.1
            Reporter: Jonathan Ellis
            Assignee: Pavel Yaskevich
             Fix For: 1.2.6


Reader pooling was introduced in CASSANDRA-4942 but pooled RandomAccessReaders are never cleaned up until the SSTableReader is closed.  So memory use is "the worst case simultaneous RAR we had open for this file, forever."

We should introduce a global limit on how much memory to use for RAR, and evict old ones.

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