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https://issues.apache.org/jira/browse/CASSANDRA-2102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthew F. Dennis updated CASSANDRA-2102:
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Attachment: 2102-cassandra-0.7.txt
attached patch switches to saving tokens to disk instead of keys, removes
DecoratedKey.key from the entries in caches (fixing the bug and reducing memory
consumption) and versions (kind of) the saved cache files.
> saved row cache doesn't save the cache
> --------------------------------------
>
> Key: CASSANDRA-2102
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2102
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 0.7.0
> Reporter: Matthew F. Dennis
> Assignee: Matthew F. Dennis
> Fix For: 0.7.2
>
> Attachments: 2102-cassandra-0.7.txt
>
>
> saving row caches works by periodically iterating of the keySet() on the
> caches and writing the keys for the cached contents to disk. The cache keys
> are DecoratedKeys. DecoratedKeys contain a Token token and a ByteBuffer key.
> The underlying buffer on the key gets reused so the contents change. This
> means that all the cache entries have distinct tokens but only a handful of
> distinct key values. This means that when the cache is loaded you only end
> up loading a handful of keys instead of the ones actually in your cache.
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