[jira] [Assigned] (CASSANDRA-20394) Restore SSTableHeaderFix for use with StandaloneScrubber for offline upgrade compatibility

["Michael Semb Wever (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-20394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Semb Wever reassigned CASSANDRA-20394:
----------------------------------------------

    Assignee:     (was: Michael Semb Wever)

> Restore SSTableHeaderFix for use with StandaloneScrubber for offline upgrade compatibility
> ------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-20394
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20394
>             Project: Apache Cassandra
>          Issue Type: Improvement
>          Components: Local/SSTable, Tool/sstable
>            Reporter: Michael Semb Wever
>            Priority: Normal
>             Fix For: 5.0.x, 5.x
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> We aim to maintain offline compatibility.
> In CASSANDRA-18504 SSTableHeaderFix and the header-fix options from StandaloneScrubber were removed in 5.0.  This broke offline compatibility from <= me sstables written from 3.0.x versions.
> While we don't need online compatibility against such old sstables, we should maintain the ability to be able to offline upgrade, including being able to fix incompatible/broken headers related to dropped non-explicit frozen UDTs.  See CASSANDRA-15035 for more info on how headers can be broken and when the fix is needed.
> Along with restoring the header fix tooling ability, this ticket also adds more test methods and test data (different past sstable formats) to LegacySSTableTest.



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