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https://issues.apache.org/jira/browse/CASSANDRA-6756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13918338#comment-13918338
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sankalp kohli commented on CASSANDRA-6756:
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With this, we will also need an option to load all stables on startup. This 
will be useful in cases where you intentionally drop stables in data directory. 
Also will be useful during restore if system keyspace is not restored. 

> Provide option to avoid loading orphan SSTables on startup
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-6756
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6756
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Vincent Mallet
>             Fix For: 1.2.16
>
>
> When Cassandra starts up, it enumerates all SSTables on disk for a known 
> column family and proceeds to loading all of them, even those that were left 
> behind before the restart because of a problem of some sort. This can lead to 
> "data gain" (resurrected data) which is just as bad as data loss.
> The ask is to provide a yaml config option which would allow one to turn that 
> behavior off by default so a cassandra cluster would be immune to data gain 
> when nodes get restarted (at least with Leveled where Cassandra keeps track 
> of SSTables).
> This is sort of a follow-up to CASSANDRA-6503 (fixed in 1.2.14). We're just 
> extremely nervous that orphan SSTables could appear because of some other 
> potential problem somewhere else and cause zombie data on a random reboot. 



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