Under the assumption that when you update the columns you also update the TTL for the columns then a tombstone won't be created for those columns. Remember that TTL is set on columns (or "cells"), not on rows, so your description of updating a row is slightly misleading. If every query updates different columns then different columns might expire at different times.
From: Walsh, Stephen [mailto:stephen.wa...@aspect.com] Sent: Wednesday, May 13, 2015 1:35 PM To: user@cassandra.apache.org Subject: Insert Vs Updates - Both create tombstones Quick Question, Our team is under much debate, we are trying to find out if an Update on a row with a TTL will create a tombstone. E.G We have one row with a TTL, if we keep "updating" that row before the TTL is hit, will a tombstone be created. I believe it will, but want to confirm. So if that's is true, And if our TTL is 10 seconds and we "update" the row every second, will 10 tombstones be created after 10 seconds? Or just 1? (and does the same apply for "insert") Regards Stephen Walsh This email (including any attachments) is proprietary to Aspect Software, Inc. and may contain information that is confidential. If you have received this message in error, please do not read, copy or forward this message. Please notify the sender immediately, delete it from your system and destroy any copies. You may not further disclose or distribute this email or its attachments.
