[jira] [Assigned] (CASSANDRA-16733) Allow operators to disable 'ALTER ... DROP COMPACT STORAGE' statements

["C. Scott Andreas (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-16733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

C. Scott Andreas reassigned CASSANDRA-16733:
--------------------------------------------

    Assignee: C. Scott Andreas  (was: Benjamin Lerer)

> Allow operators to disable 'ALTER ... DROP COMPACT STORAGE' statements
> ----------------------------------------------------------------------
>
>                 Key: CASSANDRA-16733
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16733
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Legacy/CQL
>            Reporter: Benjamin Lerer
>            Assignee: C. Scott Andreas
>            Priority: Normal
>             Fix For: 3.0.25, 3.11.11, 4.0-rc2, 4.0
>
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> {{ALTER ... DROP COMPACT STORAGE}} statements have not been extensively tested and suffer from several issues like:
> * As COMPACT tables did not have primary key liveness there empty rows
> inserted AFTER the ALTER will be returned whereas the one inserted before
> the ALTER will not.
> * Also due to the lack of primary key liveness the amount of SSTables being
> read will increase resulting in slower queries (CASSANDRA-16675)
> * After DROP COMPACT it becomes possible to ALTER the table in a way that
> makes all the row disappears
> * There is a loss of functionality around null clustering when dropping
> compact storage (CASSANDRA-16069)
> To avoid running into those issues this ticket will introduce a new flag that allow operators to disable those statements on their clusters.
> see https://www.mail-archive.com/dev@cassandra.apache.org/msg16789.html



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