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From Terry Cumaranatunge <>
Subject Using ttl to expire columns rather than using delete
Date Wed, 12 Oct 2011 01:49:13 GMT

If you set a ttl and expire a column, I've read that this eventually turns
into a tombstone and will be cleaned out by the GC. Are expirations
considered a form of delete that still requires a node repair to be run in
gc_grace_period seconds? The operations guide says you have to run node
repair if you have deletes, so I'm trying to find out if we can upsert the
column with expirations using a ttl=1 to substitute deletes. The node repair
operations is very intensive in our environment and causes a
significant performance degradation on the system.


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