Commits on Jan 30, 2019

1. Compaction: Add snooze_period_ms for finer tuning …

   We are experiencing an issue similar to apache#1579, partly because we have
   dozens of thousands of databases.
   
   On our servers:
   - `snooze_period = 0` leads to a significant CPU load,
   - `snooze_period = 1` is too long for compaction to finish within 20
     hours (after 20 hours, compaction is stopped to allow other
     CPU-intensive processes to run, and when compaction restarts, it does
     not pick up where it left 4 hours earlier -- by the way proposal at
     apache#1775 would be really great to fix that!)
   
   This commit introduces a new option `snooze_period_ms` (measured in
   milliseconds), and deprecates `snooze_period` while still supporting it
   for obvious legacy reasons.

   

   adrienverge committed Jan 30, 2019
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2. Merge branch 'master' into feat/allow-snooze-period-to-be-a-float

   

   wohali committed Jan 30, 2019
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   ab79f1a View commit details

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