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From "Sam Tunnicliffe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-14412) Restore automatic snapshot of system keyspace during upgrade
Date Mon, 23 Apr 2018 12:43:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-14412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sam Tunnicliffe updated CASSANDRA-14412:
----------------------------------------
    Status: Patch Available  (was: Open)

> Restore automatic snapshot of system keyspace during upgrade
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-14412
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14412
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Lifecycle
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>            Priority: Major
>             Fix For: 4.0
>
>
> Since 2.2, the installed version is compared with the version persisted in system.local
(if any) at startup. If these versions differ, the system keyspace is snapshotted before proceeding
in order to enable a rollback if any other issue prevents startup from completing. Although
the method to perform this check & snapshot is still present in {{SystemKeyspace}}, its
only callsite was mistakenly removed from {{CassandraDaemon}} in CASSANDRA-12716.



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