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https://issues.apache.org/jira/browse/CASSANDRA-4049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13397442#comment-13397442
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Piotr Kołaczkowski commented on CASSANDRA-4049:
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If Component.Type was not a static enum, we could provide an API to register
new component types. So DSE could invoke that API on startup, register all
components required for its custom compaction strategies, and then C* would
know about all the components, and we could use components with whatever names
we like. If you like the idea, I can do it.
> Add generic way of adding SSTable components required custom compaction
> strategy
> --------------------------------------------------------------------------------
>
> Key: CASSANDRA-4049
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4049
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Piotr Kołaczkowski
> Assignee: Piotr Kołaczkowski
> Priority: Minor
> Labels: compaction
> Fix For: 1.1.2
>
> Attachments: compaction_strategy_cleanup.patch, component_patch.diff
>
>
> CFS compaction strategy coming up in the next DSE release needs to store some
> important information in Tombstones.db and RemovedKeys.db files, one per
> sstable. However, currently Cassandra issues warnings when these files are
> found in the data directory. Additionally, when switched to
> SizeTieredCompactionStrategy, the files are left in the data directory after
> compaction.
> The attached patch adds new components to the Component class so Cassandra
> knows about those files.
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