Hi,
I want to understand how Expiring columns work in Cassandra.

Query:Documentation says that once TTL of a column expires, tombstones are 
created/ marked when the sstable gets compacted. Is there a possibility that a 
query (range scan/ row query) returns expired column data just because the 
sstable never participated in a compaction after TTL of the column expired?
For Example:  10 AM Data inserted with ttl=60 seconds  10:05 AM A query is run 
on inserted data  10:07 AM sstable is compacted and column     is marked 
tombstone.
Will the query return expired data in above scenario? If yes/no, why?

ThanksAnuj





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