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From "Wei Deng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4951) Leveled compaction manifest sometimes references nonexistent sstables in a snapshot
Date Thu, 21 Jul 2016 05:43:20 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wei Deng updated CASSANDRA-4951:
--------------------------------
    Labels: lcs  (was: )

> Leveled compaction manifest sometimes references nonexistent sstables in a snapshot
> -----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-4951
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4951
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.4
>            Reporter: Oleg Kibirev
>            Assignee: Yuki Morishita
>              Labels: lcs
>
> After nodetool snapshot on a node under load, we sometimes see sstables not referenced
in the leveled compaction json manifest, or sstables in the manifest which are not found on
disk. There are two concerns with this:
> 1. What would happened to leveled compaction and to reads if the snapshot is restored
with missing or extra sstables?
> 2. Is this a sign of a snapshot not having a complete copy of the data?
> To support automated restore, manifest and/or a list of links should be made correct
at snapshot time.  



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