[jira] [Updated] (CASSANDRA-20150) Create snapshot manifest upon loading where it does not exist or enrich it

["Stefan Miklosovic (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-20150?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefan Miklosovic updated CASSANDRA-20150:
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    Summary: Create snapshot manifest upon loading where it does not exist or enrich it  (was: Create manifest upon loading where it does not exist or enrich it)

> Create snapshot manifest upon loading where it does not exist or enrich it
> --------------------------------------------------------------------------
>
>                 Key: CASSANDRA-20150
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-20150
>             Project: Apache Cassandra
>          Issue Type: Improvement
>          Components: Local/Snapshots
>            Reporter: Stefan Miklosovic
>            Assignee: Stefan Miklosovic
>            Priority: Normal
>             Fix For: 5.x
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
>     In 4.0 times, there was no snapshot manifest created. When such
>     node is upgraded to 5.1, no snapshots would be found, because even
>     they would be loaded, snapshot's presence is logically determined by the
>     existence of at least one manifest.json file in any data dir. That
>     would result in snapshots not being shown e.g. in the output of
>     nodetool listsnapshots.
>     
>     The fix consists of creating a manifest in each snapshot directory when not present.
>     
>     When a manifest.json exists, its older format has not contained created_at field.
>     When this is detected, we will proceed to enrich such manifest by overwriting it
>     with a manifest of new format.



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