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https://issues.apache.org/jira/browse/CASSANDRA-15945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17161461#comment-17161461
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David Capwell commented on CASSANDRA-15945:
-------------------------------------------

LGTM. +1

> Verify expected SSTable components are present at startup
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-15945
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15945
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Local/SSTable
>            Reporter: Yifan Cai
>            Assignee: Yifan Cai
>            Priority: Normal
>             Fix For: 4.0
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> When Cassandra batch opens all sstables at startup, it should check that all 
> components listed in the TOC.txt are available. Compression is optional, so 
> there may not be a Compression.db component for all sstables, but if there 
> should be and it's missing we continue to load the sstable. The sstable is 
> unreadable without the compression metadata though, but we won't know this 
> until it's touched by a query or compaction.
> To reliably use TOC.txt for verification, it needs CASSANDRA-10709 



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