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What this PR does:
The /series request is currently served only fetching series from the ingesters (both chunks and blocks storage). This means that when the query has a time range older then the ingester's data time range, the /series always return an empty result set if the request time range is honored.

In the chunks storage we picked the path to ignore the request time range right now (until efficiently querying the long-term storage for the /series will be a thing) and in this PR I'm doing the same for the blocks storage as well, keeping the two storage engines aligned in this regard.

Which issue(s) this PR fixes:
Fixes #2612

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 21, 2020 08:37
Signed-off-by: Marco Pracucci <[email protected]>
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👍

pracucci and others added 2 commits May 21, 2020 11:02
Signed-off-by: Marco Pracucci <[email protected]>

Co-authored-by: Peter Štibraný <[email protected]>
Signed-off-by: Marco Pracucci <[email protected]>

Co-authored-by: Peter Štibraný <[email protected]>
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Thanks @pstibrany for fixing my typos!

@pracucci pracucci merged commit 75c3c54 into cortexproject:master May 21, 2020
@pracucci pracucci deleted the fix-series-timerange-for-blocks-storage branch May 21, 2020 12:26
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Unexpected behaviour if using nested variables in grafana templates with block storage

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