Hi,
After upgrading from 1.0 to 1.2, I wanted to make use of the automatic
tombstone compaction feature, so using CQL3 I issued:
ALTER TABLE versions WITH compaction = {'class' :
'SizeTieredCompactionStrategy', 'min_threshold' : 4, 'max_threshold' : 32,
'tombstone_compaction_interval' : 1, 'tombstone_threshold' : '0.1'};
But I still see no trace that would suggest this works - we had 60G of data
with TTL=1week pushed a while ago to the test cluster, the majority of it
should be expired & compacted away by now. Not sure if it is relevant, but this
old data is in one ~60G file + I have a few smaller files with latest data in
them.
Looking at JMX: DroppableTombstoneRatio = 0.892076544, which seems to back my
theory.
Am I doing something wrong, or am I expecting the wrong thing?
Thanks,
Tamas
