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fix(chunk-grids): require chunk sizes of at least 1 and read the 0, false and true sizes older releases stored - #4334

Merged

d-v-b merged 53 commits into

zarr-developers:mainfrom

d-v-b:fix/zero-length-single-invariant

Oct 1, 2026

Merged

fix(chunk-grids): require chunk sizes of at least 1 and read the 0, false and true sizes older releases stored#4334
d-v-b merged 53 commits into
zarr-developers:mainfrom
d-v-b:fix/zero-length-single-invariant

Commits on Sep 9, 2026
Commits on Sep 12, 2026
- Merge branch 'main' into fix/zero-length-single-invariant
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  authored
  7a2a71a
Commits on Sep 13, 2026
- docs: qualify zero-chunk compatibility history
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  committed
  2297c62
Commits on Sep 16, 2026
- Merge branch 'main' into fix/zero-length-single-invariant
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  authored
  2873178
- Merge branch 'main' into fix/zero-length-single-invariant
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  authored
  d868213
Commits on Sep 19, 2026
Commits on Sep 25, 2026
- Merge branch 'main' into fix/zero-length-single-invariant
  d-v-b
  authored
  64b3550
- fix(metadata): read a stored zero chunk size on a grown axis as one spanning chunk
  
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  8414ea3
- test: a stateful test of one array's create/append/resize/write life
  
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  2bf32df
- fix(metadata): stop the zero chunk size warning from naming writers
  
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  1723f0b
- chore(metadata): drop an orphaned comment in ArrayV2Metadata.__init__
  
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  3d223f1
- fix(chunk-grids): size a full-span shard as a multiple of the inner chunk
  
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  339c514
- refactor(metadata): read invalid stored chunk sizes in one module of document upgrades
  
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  e49eb7e
- docs: rewrite the 4334 changelog fragment and trim restating docstrings
  
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  f6f5c7b
- test: model exactly what the store holds in the array lifecycle state machine
  
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  f873358
- refactor(metadata): warn about an upgraded document only once it validates
  
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  d9549b8
Commits on Sep 26, 2026
- refactor(metadata): one per-axis rule for stored chunk sizes, one rule for edges
  
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  5ef0f51
- refactor(chunk-grids): start chunk guessing from the one full-span rule
  
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  192f86c
- test: run the array lifecycle state machine in the slow Hypothesis job
  
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  2e878cf
- fix(array): store upgraded metadata before writing the first chunk
  
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  c0d4b3c
- refactor(metadata): name an array one way in upgrade warnings
  
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  121b6b2
- refactor(metadata): one rule for bare sizes and edge lists; one noun in messages
  
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  c1353bf
- fix(array): store the upgrade of the current stored document before writing
  
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  f081f1b
- test: prefer zero-length axes for stored chunk size 0 in the lifecycle machine
  
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  9e29333
- fix(metadata): keep accepting the chunk sizes zarr 3.4.0 accepted in metadata constructors (patch release)
  
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  632ac2b
- fix(array): leave a valid stored document as written on a stale handle's first write
  
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  245acae
- docs: describe the 4334 changes to metadata constructors for a patch release
  
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  2d0121d
- fix(metadata): read float edges only in stored rectilinear documents
  
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  4c4fe21
- test(codecs): pickle a ShardingCodec with an inner chunk size of 0
  
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  6fde402
- fix(group): build every node before create_hierarchy deletes or stores anything
  
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  b0ea125
- fix(metadata): warn only where the user must act; guard and refresh upgraded copies
  
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- test: expect the lifecycle machine's upgrade warning only on non-empty axes
  
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  f78e115
- fix(metadata): leave a sharded chunk size of 0 unread when the inner shape is invalid
  
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  bc306aa
- perf(metadata): read each upgraded member once, concurrently, and adopt it
  
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  3bc802f
- fix(group): adopt refreshed consolidated members in place
  
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  dc50ec6
- fix(metadata): raise the rectilinear flag error when refreshing a consolidated member
  
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  cddb877
- fix(group): store a group's documents only; keep upgraded members as stored
  
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  4b9f82c
- docs(group): say what consolidated metadata stores for an upgraded array
  
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- fix(array): clear the stored document whenever an array stores its metadata
  
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  faa6efe
- test(metadata): pin that a failed metadata save keeps the stored document mark
  
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  30d7ca6
Commits on Sep 29, 2026
Commits on Sep 30, 2026
- fix(metadata): recommend recreating an array whose stored chunk size was 0
  
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  5dccfb8
- fix(metadata): give the recipe for recreating an array read from a stored chunk size of 0
  
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  fcc24bb
Commits on Oct 1, 2026
- Merge branch 'main' into fix/zero-length-single-invariant
  
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  c4eb475
- refactor(metadata): call the lenient readings of stored documents repairs, not upgrades
  
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  0992e94

Commits

Commits on Sep 9, 2026

Commits on Sep 12, 2026

Commits on Sep 13, 2026

Commits on Sep 16, 2026

Commits on Sep 19, 2026

Commits on Sep 25, 2026

Commits on Sep 26, 2026

Commits on Sep 29, 2026

Commits on Sep 30, 2026

Commits on Oct 1, 2026