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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5149) Respect slice count even if column expire mid-request
Date Mon, 17 Jun 2013 14:33:21 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13685616#comment-13685616
] 

Aleksey Yeschenko commented on CASSANDRA-5149:
----------------------------------------------

Pushed the fourth commit to the same branch.

- Removed Column.isMarkedForDelete/0 and most similar methods (including QueryFilter getXFilter
helper methods)
- RowIteratorFactory/System.currentTimeMillis() - done.
- CFS.filterColumnFamily() was the only place where I could get rid of passing gcBefore explicitly
- thanks for catching that. In IDiskAtomFilter.collectReducedColumns() timestamp and gcbefore
are sometimes unrelated (with Integer.MIN_VALUE passed as gcBefore, intentionally). Same goes
for CFS.collateOnDiskAtom(). Usually it's either because of either compaction or the row cache.
                
> Respect slice count even if column expire mid-request
> -----------------------------------------------------
>
>                 Key: CASSANDRA-5149
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5149
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.7.0
>            Reporter: Sylvain Lebresne
>            Assignee: Aleksey Yeschenko
>             Fix For: 2.0
>
>
> This is a follow-up of CASSANDRA-5099.
> If a column expire just while a slice query is performed, it is possible for replicas
to count said column as live but to have the coordinator seeing it as dead when building the
final result. The effect that the query might return strictly less columns that the requested
slice count even though there is some live columns matching the slice predicate but not returned
in the result.

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