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What this PR does:
While running #2599 in production, we learned that the samples deduplication is seriously affected (ie. with 3 shards the actualy deduplication less than 50%), so we're working on a different way to scale blocks sharding. As a first step I'm rolling back the blocks sharding.

In this PR I've also:

  • Reduced -compactor.consistency-delay default to 0 (it's OK for consistent objstores)
  • Introduced an option -compactor.compaction-concurrency to allow to configure compaction groups concurrency

Which issue(s) this PR fixes:
N/A

Checklist

  • Tests updated
  • Documentation added
  • CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

@pracucci pracucci requested a review from pstibrany May 25, 2020 11:50
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LGTM

Signed-off-by: Marco Pracucci <[email protected]>
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LGTM

@pracucci pracucci merged commit 6cf85f9 into cortexproject:master May 25, 2020
@pracucci pracucci deleted the rollback-compactor-blocks-sharding branch May 25, 2020 12:52
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2 participants