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Adding support for daylight savings time in timeseries queries #3494

Merged
merged 29 commits into from
Dec 12, 2023
Merged

Adding support for daylight savings time in timeseries queries #3494

merged 29 commits into from
Dec 12, 2023

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AdityaHegde
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@AdityaHegde AdityaHegde commented Nov 15, 2023 •
edited by egor-ryashin
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  • Fix extra null row around DST
  • Fix first_day_of_week giving incorrect results in the duckdb query. (Off by one day every other row) (@AdityaHegde )
  • Analyze performance regression (Egor)

@nishantmonu51 nishantmonu51 added the Type:Bug Something isn't working label Nov 15, 2023
@nishantmonu51 nishantmonu51 marked this pull request as draft November 16, 2023 09:42
@djbarnwal djbarnwal removed their request for review November 23, 2023 10:46
@AndrewRTsao AndrewRTsao mentioned this pull request Nov 27, 2023
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@AdityaHegde AdityaHegde self-assigned this Nov 28, 2023
@AdityaHegde AdityaHegde marked this pull request as ready for review November 28, 2023 12:09
begelundmuller
begelundmuller reviewed Nov 29, 2023
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The changes in this PR look good to me.

For context for others, we found that just using time_bucket and passing a time zone to it corrects for offsets, but still treats DST changes as separate bins (with the same labels), which is the behavior we decided we want (see Notion).

Two questions before this is ready to merge:

  1. @AdityaHegde, did you confirm this does not null-fill at DST changes (i.e. just skips the value instead)?
  2. @egor-ryashin, I did some testing and the Druid implementation (not changed in this PR) appears to already have the desired behavior. Is that also your impression?

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Yes, it works for both.

@begelundmuller
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Update from @AdityaHegde:

Null filling is failing with first_of_week=7. The issue is duration.Add is not honouring DST for week grain. But seem to do it for day and hour. Checking in depth

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I have fixed the duckdb query. Interval arithmetic didnt honour time zone. Looks like it is already working in druid.

The UI test failure seem to be unrelated. It is testing formatting in leaderboards, this only changes timeseries.

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As an extra validation, I went ahead and did some further testing locally. Can confirm this should fix the customer reported issues as well. However, this fix won't address #3560 so we'll want to fix that separately.

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Note that #3560 is fixed from the API side in a previous commit. Had a debug session with @AndrewRTsao , the issue is in the formatter we use in the UI. Formatting seem to convert the UTC into another UTC with an offset leading to issues based on user's time zone. We should instead use luxon to format it and keep the underlying UTC time the same.

Lets tackle the labelling issue separately. I have reverted the labelling changes in charts from this PR so that we can fix it together.

begelundmuller
begelundmuller requested changes Dec 6, 2023
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runtime/queries/metricsview_api_benchmark_test.go Outdated
@@ -114,3 +148,16 @@ func prepareEnvironment(b *testing.B) (*runtime.Runtime, string, *runtimev1.Metr
mv := obj.GetMetricsView().Spec
return rt, instanceID, mv
}

func prepareEnvironmentSpending(b *testing.B) (*runtime.Runtime, string, *runtimev1.MetricsViewSpec) {
rt, instanceID := testruntime.NewInstanceForProject(b, "spending")
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Not seeing this project anywhere?

runtime/queries/metricsview_timeseries.go Outdated Show resolved Hide resolved
@begelundmuller begelundmuller added the blocker A release blocker issue that should be resolved before a new release label Dec 7, 2023
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begelundmuller commented Dec 8, 2023 •
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Hey @egor-ryashin, some more questions about this PR:

  1. The issue says "Fix first_day_of_week giving incorrect results" is still unresolved. Is that correct? If yes, we should fix it before merging.
  2. There's an unresolved comment about the benchmarks referencing spending project that's not committed. If you can't find another approach, can you at least add comments to the benchmark code about how to reproduce that so others can run the benchmarks?
  3. I'm still concerned that the timezone(date_trunc(timezone... trick has some other issues that we're not aware of – otherwise, time_bucket should be able to match its performance for daily granularities. Did you investigate/ask about potential issues with this trick?

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  1. Looking into that.
  2. Yes, but I have no definite confirmation/negation about correctness right now.

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  1. It's resolved.

@egor-ryashin egor-ryashin merged commit edd0ac7 into main Dec 12, 2023
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@egor-ryashin egor-ryashin deleted the timeseries-dst-support branch December 12, 2023 13:50
mindspank pushed a commit that referenced this pull request Dec 18, 2023
@AdityaHegde @egor-ryashin
@rakeshsharma14317 @mindspank
Adding support for daylight savings time in timeseries queries (#3494)
767db0d 
* Adding support for DST in timeseries queries



---------

Co-authored-by: egor-ryashin <riashin.egor@gmail.com>
Co-authored-by: Egor Ryashin <egor.ryashin@rilldata.com>
Co-authored-by: Rakesh Sharma <rakeshsharma14317@gmail.com>
esevastyanov pushed a commit that referenced this pull request Dec 19, 2023
@AdityaHegde @esevastyanov
Adding support for daylight savings time in timeseries queries (#3494)
0471d72 
* Adding support for DST in timeseries queries

---------

Co-authored-by: egor-ryashin <riashin.egor@gmail.com>
Co-authored-by: Egor Ryashin <egor.ryashin@rilldata.com>
Co-authored-by: Rakesh Sharma <rakeshsharma14317@gmail.com>
(cherry picked from commit edd0ac7)
esevastyanov pushed a commit that referenced this pull request Dec 19, 2023
@AdityaHegde @esevastyanov
Adding support for daylight savings time in timeseries queries (#3494)
7d9721d 
* Adding support for DST in timeseries queries

---------

Co-authored-by: egor-ryashin <riashin.egor@gmail.com>
Co-authored-by: Egor Ryashin <egor.ryashin@rilldata.com>
Co-authored-by: Rakesh Sharma <rakeshsharma14317@gmail.com>
(cherry picked from commit edd0ac7)
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@egor-ryashin egor-ryashin egor-ryashin approved these changes

@begelundmuller begelundmuller begelundmuller approved these changes

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@AdityaHegde @egor-ryashin @begelundmuller @AndrewRTsao @nishantmonu51 @rakeshsharma14317