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https://issues.apache.org/jira/browse/CASSANDRA-13994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17144219#comment-17144219
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Dinesh Joshi commented on CASSANDRA-13994:
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Given that there are multiple discussions concerning this ticket happening, can
someone please clarify if we want to move forward with this? Last time I
checked in on the discussion for this ticket, people voiced concerns about
making such an invasive change in alpha release. This ticket was deemed too
risky and would 'invalidate testing'. This was the last known consensus on the
mailing list. Has that changed? Why? Can someone please point me to the
discussion that led to this decision? Or is it that we're just revisiting this
ticket in the light of some new information?
> Remove COMPACT STORAGE internals before 4.0 release
> ---------------------------------------------------
>
> Key: CASSANDRA-13994
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13994
> Project: Cassandra
> Issue Type: Improvement
> Components: Legacy/Local Write-Read Paths
> Reporter: Alex Petrov
> Assignee: Ekaterina Dimitrova
> Priority: Low
> Fix For: 4.0, 4.0-alpha
>
>
> 4.0 comes without thrift (after [CASSANDRA-11115]) and COMPACT STORAGE (after
> [CASSANDRA-10857]), and since Compact Storage flags are now disabled, all of
> the related functionality is useless.
> There are still some things to consider:
> 1. One of the system tables (built indexes) was compact. For now, we just
> added {{value}} column to it to make sure it's backwards-compatible, but we
> might want to make sure it's just a "normal" table and doesn't have redundant
> columns.
> 2. Compact Tables were building indexes in {{KEYS}} mode. Removing it is
> trivial, but this would mean that all built indexes will be defunct. We could
> log a warning for now and ask users to migrate off those for now and
> completely remove it from future releases. It's just a couple of classes
> though.
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