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https://issues.apache.org/jira/browse/CASSANDRA-8568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14363960#comment-14363960
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Benedict commented on CASSANDRA-8568:
-------------------------------------

I've force pushed an update to my repository that fixes a couple of minor bugs, 
and introduces a FaultInjectionTestRunner based on ByteMan. It is a work in 
progress, with the goal state being complete coverage of all possible 
interleavings of different pathways. Right now it is testing a majority of 
simple single failures that can occur during an online SSTableRewriter action. 
I intend to extend this to the complete set of single failures in the normal 
path (if a failure point can be hit multiple times, I intend also ensure each 
possible time is tried, to test all intermediate states), and also failures 
during recovery.

My hope is we can roll the new FaultInjectionTestRunner out into a number of 
other places in the codebase as well.

> 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
>
> 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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