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From "Billy" <sa...@pearsonwholesale.com>
Subject Re: hbase feature question
Date Sat, 17 Nov 2007 17:42:32 GMT
Thanks add here


"Jim Kellerman" <jim@powerset.com> wrote in 
Currently, HBase supports specifying a maximum number of versions to
keep. Older versions are removed during compaction.

However, we do not currently support a TTL for columns. Please enter
a Jira using the component contrib/hbase and request a feature improvement.


Jim Kellerman, Senior Engineer; Powerset

> -----Original Message-----
> From: news [mailto:news@ger.gmane.org] On Behalf 
> Of Billy
> Sent: Saturday, November 17, 2007 8:18 AM
> To: hadoop-user@lucene.apache.org
> Subject: hbase feature question
> I was looking over the bigtable pdf again to make sure that's
> where I read this, but there setup allows Column Families to
> be removed from the database in  garbage collection. Is this
> a feature that will be added to hbase?
> Basically it allows you to set a max ttl for a column row. I
> can see where this would be useful for nutch and other apps
> in crawling.
> Example storing links from z page pointing to x page if not
> updated by y time it gets removed form the dataset. keeps
> from having the scan the whole dataset to remove stale data.
> Billy

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