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docs: 3.2.2 release notes#3992

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docs: 3.2.2 release notes#3992
d-v-b wants to merge 2 commits into
zarr-developers:mainfrom
d-v-b:3.2.2-release

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@d-v-b d-v-b commented May 20, 2026

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@d-v-b d-v-b added benchmark Code will be benchmarked in a CI job. run-downstream Run the tests of downstream libraries (e.g., xarray) against zarr labels May 20, 2026
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codecov Bot commented May 20, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.39%. Comparing base (5ca1690) to head (267dafa).

Additional details and impacted files
@@           Coverage Diff           @@
##             main    #3992   +/-   ##
=======================================
  Coverage   93.39%   93.39%           
=======================================
  Files          88       88           
  Lines       11839    11839           
=======================================
  Hits        11057    11057           
  Misses        782      782           
🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

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codspeed-hq Bot commented May 20, 2026

Merging this PR will not alter performance

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 3 improved benchmarks
❌ 2 regressed benchmarks
✅ 61 untouched benchmarks
⏩ 6 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
WallTime test_slice_indexing[(50, 50, 50)-(slice(None, 10, None), slice(None, 10, None), slice(None, 10, None))-memory_get_latency] 4.1 ms 3.2 ms +30.41%
WallTime test_slice_indexing[(50, 50, 50)-(slice(10, -10, 4), slice(10, -10, 4), slice(10, -10, 4))-memory_get_latency] 237.2 ms 206.2 ms +15.03%
WallTime test_slice_indexing[(50, 50, 50)-(0, 0, 0)-memory_get_latency] 4.1 ms 3.2 ms +29.44%
WallTime test_sharded_morton_single_chunk[(32, 32, 32)-memory] 2 ms 2.2 ms -12.91%
WallTime test_sharded_morton_single_chunk[(30, 30, 30)-memory] 1.9 ms 2.2 ms -14.28%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.


Comparing d-v-b:3.2.2-release (05021c6) with main (51033fb)2

Open in CodSpeed

Footnotes

  1. 6 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

  2. No successful run was found on main (27abff2) during the generation of this report, so 51033fb was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.

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d-v-b commented May 20, 2026

tests will fail until we merge #3994

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