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https://issues.apache.org/jira/browse/CASSANDRA-8707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14305137#comment-14305137
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Benedict commented on CASSANDRA-8707:
-------------------------------------

Like I said, I'd _really_ rather not merge GlobalTidy and TypeTidy, but can if 
you're really set on it. By doing so we trade some slight class hierarchy 
simplcity for special casing, and the latter always leads to problems further 
down the line. I'll offer up a version with the XManager classes removed for 
now, and see where that gets us.

> 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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