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https://issues.apache.org/jira/browse/CASSANDRA-8568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14553848#comment-14553848
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Marcus Eriksson commented on CASSANDRA-8568:
--------------------------------------------

bq. LifecycleTransaction
yes, lets atleast do that. Regarding DataTracker -> Tracker, I guess it is 
fine, but then everything mentioning DataTracker should be changed (for example 
cfs.getDataTracker())

comments for updated branch:
* have you created a ticket for the failing ViewTest#testSSTablesInBounds() ? 
(I guess this is the old-functionality-test you mention that is failing?)
* TrackerTest#testDropSSTables() seems to be failing due to the deleting task 
being run before asserting the sizes (reducing the totalDiskSpaceUsed)

other than that, this looks good to me

> Impose new API on data tracker modifications that makes correct usage obvious 
> and imposes safety
> ------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-8568
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8568
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Benedict
>            Assignee: Benedict
>             Fix For: 2.2.0 rc1
>
>
> DataTracker has become a bit of a quagmire, and not at all obvious to 
> interface with, with many subtly different modifiers. I suspect it is still 
> subtly broken, especially around error recovery.
> I propose piggy-backing on CASSANDRA-7705 to offer RAII (and GC-enforced, for 
> those situations where a try/finally block isn't possible) objects that have 
> transactional behaviour, and with few simple declarative methods that can be 
> composed simply to provide all of the functionality we currently need.
> See CASSANDRA-8399 for context



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