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From "Sylvain Lebresne (JIRA)" <>
Subject [jira] [Resolved] (CASSANDRA-2795) Autodelete empty rows
Date Mon, 20 Jun 2011 10:05:47 GMT


Sylvain Lebresne resolved CASSANDRA-2795.

    Resolution: Not A Problem

What you are seeing is range ghosts:

The row *is* correctly deleted when all columns expires. It won't show as a range ghost once
gc_grace seconds have passed.

> Autodelete empty rows
> ---------------------
>                 Key: CASSANDRA-2795
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core, Tools
>    Affects Versions: 0.8.0
>            Reporter: Pau Rodriguez
> In a system where every column expire using TTL. The rows persist, and they are empty.
> If is possible to also delete them if empty when last column had expired.
> I understand that this may be difficult to synchronize between all the cluster.
> If this behavior isn't good for all cases, maybe can be configured in a variable per
Column Family.
> Alternatively could be a tool to removed empty rows along all the cluster, the problem
to do that using the API is the time between the check is done and the remove is send.
> I think that is preferable to be done when last column has expired.
> Thanks in advance.

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