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From Jonathan Ellis <>
Subject Re: Removing Data
Date Tue, 14 Sep 2010 15:05:12 GMT
On Tue, Sep 14, 2010 at 9:51 AM, Jeremiah Jordan
<> wrote:
> Is setting a value to ‘’ the same as deleting it in terms of disk space
> being free’d?

no, you're saying "preserve that column X has an empty value, forever."

>  Will it still take gc_grace_seconds for the old data to be
> removed from disk?

No.  (It will take until it happens to be obsoleted by compaction.)

Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support

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