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Yuki Morishita commented on CASSANDRA-6356:
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Thanks for the comments, [~jbellis], [~krummas].
I first thought about adding more components, but as Marcus pointed out, I was
worried about too many files.
The patch may seem not worth for the properties we have right now, but if we
want to add more, I think it is going to be messy if we keep current
implementation.
For just adding HLL, this refactoring may not needed. I did some experiments
and can reduce the size of it I think. Will update about this on CASSANDRA-5906.
> Proposal: Statistics.db (SSTableMetadata) format change
> -------------------------------------------------------
>
> Key: CASSANDRA-6356
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6356
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Yuki Morishita
> Assignee: Yuki Morishita
> Priority: Minor
> Fix For: 2.1
>
>
> We started to distinguish what's loaded to heap, and what's not from
> Statistics.db. For now, ancestors are loaded as they needed.
> Current serialization format is so adhoc that adding new metadata that are
> not permanently hold onto memory is somewhat difficult and messy. I propose
> to change serialization format so that a group of stats can be loaded as
> needed.
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