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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-2317) Column family deletion time is not always reseted after gc_grace
Date Mon, 14 Mar 2011 14:28:30 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13006426#comment-13006426
] 

Jonathan Ellis commented on CASSANDRA-2317:
-------------------------------------------

Oh, so the problem is that we're not actually losing information (when a CF contains non-deleted
data) that we may lose otherwise?

Is that really worth adding a bunch of complexity to "fix?"

> Column family deletion time is not always reseted after gc_grace
> ----------------------------------------------------------------
>
>                 Key: CASSANDRA-2317
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2317
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.6
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 0.7.5
>
>         Attachments: 0001-Add-AbstractColumnContainer-to-factor-common-parts-o.patch,
0002-Add-unit-test.patch, 0003-Reset-CF-and-SC-deletion-time-after-compaction.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Follow up of CASSANDRA-2305.
> Reproducible (thanks to Jeffrey Wang) by: 
> Create a CF with gc_grace_seconds = 0 and no row cache.
> Insert row X, col A with timestamp 0.
> Insert row X, col B with timestamp 2.
> Remove row X with timestamp 1 (expect col A to disappear, col B to stay).
> Wait 1 second.
> Force flush and compaction.
> Insert row X, col A with timestamp 0.
> Read row X, col A (see nothing).

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