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Fix delta histogram sum not being reset on collection #2533

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merged 4 commits into from
Mar 21, 2022
Merged

Fix delta histogram sum not being reset on collection #2533

merged 4 commits into from
Mar 21, 2022

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pichlermarc
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@pichlermarc pichlermarc commented Mar 16, 2022 •
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Description

This PR fixes an issue where _ExplicitBucketHistogramAggregation does not reset the _sum field on collection, even though it always creates an AggregationTemporality.DELTA histogram and resets _bucket_counts to an all-zero array. This caused sum values to be wrong on export for both AggregationTemporality.DELTA and AggregationTemporality.CUMULATIVE

Fixes #2532

Type of change

  • Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

  • Added missing assertions to unit test.

Checklist:

  • Followed the style guidelines of this project
  • Changelogs have been updated
  • Unit tests have been added
  • Documentation has been updated

@pichlermarc pichlermarc requested a review from a team March 16, 2022 08:53
@pichlermarc pichlermarc mentioned this pull request Mar 16, 2022
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@aabmass aabmass added sdk Affects the SDK package. metrics labels Mar 17, 2022
aabmass
aabmass approved these changes Mar 18, 2022
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Thanks for the fix, LGTM

@srikanthccv srikanthccv merged commit f7b33c6 into open-telemetry:main Mar 21, 2022
@pichlermarc pichlermarc deleted the fix-delta-histograms branch March 21, 2022 16:25
@pichlermarc pichlermarc mentioned this pull request Apr 22, 2022
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@ocelotl ocelotl ocelotl approved these changes

@aabmass aabmass aabmass approved these changes

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Sum not being reset on AggreagationTempoarlity.DELTA Histograms
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@pichlermarc @aabmass @ocelotl @srikanthccv