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https://issues.apache.org/jira/browse/CASSANDRA-16789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17401570#comment-17401570
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Abuli Palagashvili commented on CASSANDRA-16789:
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Patch is almost ready.We've added new entities {{TableSnapshot}} and
{{SnapshotManifest}}.Now all information about snapshots (including creation
and expiration times) is stored into this objects.We've also added
{{SnapshotManager}} class for tracking, indexing and removing of expiring
snapshots.We made it a part of {{StorageService}}.Cleanup process is
implemented as regularly run task.Cassandra operator can specify period between
launches.We've also added columns {{CreatedAt}} and {{ExpiresAt}} columns to
{{listsnapshots}} nodetool command output.
> Add TTL support to nodetool snapshots
> -------------------------------------
>
> Key: CASSANDRA-16789
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16789
> Project: Cassandra
> Issue Type: Sub-task
> Components: Tool/nodetool
> Reporter: Paulo Motta
> Assignee: Abuli Palagashvili
> Priority: Normal
>
> Add new parameter {{--ttl}} to {{nodetool snapshot}} command. This parameter
> can be specified in human readable duration (ie. 30mins, 1h, 300d) and should
> not be lower than 1 minute.
> The expiration date should be added to the snapshot manifest in ISO format.
> A periodic thread should efficiently scan snapshots and automatically clear
> those past expiration date. The periodicity of the scan thread should be 1
> minute by default but be overridable via a system property.
> The command {{nodetool listsnapshots}} should display the expiration date
> when the snapshot contains a TTL.
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