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Add query sharding support to ingesters #140

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merged 1 commit into from
Aug 17, 2021

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pracucci
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What this PR does:
In grafana/mimir-prometheus#1 we've added sharding support to TSDB. In this PR I'm leveraging on that to add query sharding support to ingesters. The logic is pretty easy: when a query has the sharding label, than pass it along with SelectHints down to TSDB.

Draft because it builds on top of #139.

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]

_, err = i.v2Push(ctx, req)
require.NoError(t, err)

// Push all series. We push half of the series, then we compact the TSDB head into a block (flush)
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@pracucci pracucci Aug 16, 2021

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Instead of adding a new test, I've preferred extending TestIngester_v2QueryStream() so that we further improve it (eg. now it both queries compacted block and head, instead of just head). The diff is a bit difficult to read: I suggest to read the whole new implementation of this test.

Signed-off-by: Marco Pracucci <marco@pracucci.com>
@pracucci pracucci force-pushed the add-sharding-support-to-ingesters branch from 1b60014 to c3f4560 Compare August 17, 2021 09:31
@pracucci pracucci marked this pull request as ready for review August 17, 2021 09:31
@pracucci pracucci requested a review from pstibrany August 17, 2021 09:31
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Nice work.

@pracucci pracucci merged commit 16d8104 into main Aug 17, 2021
@pracucci pracucci deleted the add-sharding-support-to-ingesters branch August 17, 2021 10:34
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3 participants