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establish new thresholds for cassandra alarms after switching restbase to dtcs
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Description

as per discussion in https://phabricator.wikimedia.org/T117115#1800047 we need to tweak the thresholds for cassandra alarms related to compactions and sstables per read (at least) since values have changed post-switch to date tiered compaction strategy

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fgiunchedi raised the priority of this task from to Needs Triage.
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Change 253941 had a related patch set uploaded (by Filippo Giunchedi):
restbase: higher sstable per read threshold

https://gerrit.wikimedia.org/r/253941

Change 253942 had a related patch set uploaded (by Filippo Giunchedi):
restbase: remove cassandra pending compactions alert

https://gerrit.wikimedia.org/r/253942

Change 253941 merged by Filippo Giunchedi:
restbase: higher sstable per read threshold

https://gerrit.wikimedia.org/r/253941

Change 253942 merged by Filippo Giunchedi:
restbase: raise threshold for pending compactions

https://gerrit.wikimedia.org/r/253942

leaving this open, pending confirmation that new threshold are ok

fgiunchedi changed the task status from Open to Stalled.Nov 20 2015, 9:42 AM
mobrovac added a subscriber: mobrovac.

Could be time to close this one perhaps?

Could be time to close this one perhaps?

Since we've given up on using a discreet threshold for these metrics, I'd say it's safe to close it, yeah.