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. Thanks. --- Jim Kellerman, Senior Engineer; Powerset > -----Original Message----- > From: news [mailto:[EMAIL PROTECTED] 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 > > > >
