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https://issues.apache.org/jira/browse/CASSANDRA-8707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14305114#comment-14305114
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Marcus Eriksson commented on CASSANDRA-8707:
--------------------------------------------

bq. simplify by not distinguishing between the global and per-descriptor-type 
state.
bq. eliminate all of the XManager classes.
bq. merge GlobalTidy and TypeTidy

lets try that?

> Move SegmentedFile, IndexSummary and BloomFilter to utilising RefCounted
> ------------------------------------------------------------------------
>
>                 Key: CASSANDRA-8707
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8707
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Benedict
>            Assignee: Benedict
>            Priority: Critical
>             Fix For: 2.1.3
>
>
> There are still a few bugs with resource management, especially around 
> SSTableReader cleanup, esp. when intermixing with compaction. This migration 
> should help. We can simultaneously "simplify" the logic in SSTableReader to 
> not track the replacement chain, only to take a new reference to each of the 
> underlying resources.



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