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https://issues.apache.org/jira/browse/CASSANDRA-9828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-9828:
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Reviewer: Joshua McKenzie
> Minor improvements to RowStats
> ------------------------------
>
> Key: CASSANDRA-9828
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9828
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Priority: Minor
> Fix For: 3.0 beta 1
>
>
> There is some small improvements/refactor I'd like to do for {{RowStats}}.
> More specifically, I'm attaching 3 commits:
> # the first one merely rename {{RowStats}} to {{EncodingStats}}. {{RowStats}}
> was not a terribly helpful name while {{EncodingStats}} at least give a sense
> of why the thing exists.
> # the 2nd one improve the serialization of those {{EncodingStats}}.
> {{EncodingStats}} holds both a {{minTimestamp}} and a
> {{minLocalDeletionTime}}, both of which are unix timestamp (or at least
> should be almost all the time for the timestamp by convention) and so are
> fairly big numbers that don't get much love (if any) from vint encoding. So
> the patch introducing hard-coded epoch numbers for both that roughly
> correspond to now, and substract that to the actual {{EncodingStats}} number
> to make it more rip for vint encoding. It does mean the exact encoding size
> will deteriorate over time, but it'll take a while before it becomes useless
> and we'll probably have more more change to the encodings by then anyway
> (and/or we can change the epoch number regularly with new versions of the
> messaging protocol if we so wish).
> # the last patch is just a small simple cleanup.
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