[fix](iceberg) Harden external-write lifecycle, OCC, memory, and file ownership - #66348

Merged

Gabriel39 merged 29 commits into

apache:masterfrom

Gabriel39:fix/iceberg-write-safety

Aug 14, 2026

Commits on Aug 7, 2026

[fix](iceberg) Harden write lifecycle and cleanup
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5839584
[fix](iceberg) Address write safety review findings
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f299232
[fix](iceberg) Preserve Azure data and deduplicate orphan scans
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08b5ac7
[fix](iceberg) Address follow-up write safety review
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065e5df
[fix](iceberg) Address multipart and snapshot review feedback
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87b3235
[fix](iceberg) Address remaining write safety feedback
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25f5e23
[fix](iceberg) Match object store hash layout
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febfd1a
[fix](azure) Keep multipart block IDs rolling-compatible
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5f8b26f
[test](azure) Seed legacy residual block ID
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82a09e1
[fix](azure) Fence multipart writers with blob leases
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2771934
[fix](iceberg) Close async and rolling boundaries
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b6f4f01
[test](iceberg) Isolate async admission policy
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630af93
[fix](iceberg) Close remaining write safety gaps
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40f328b
[chore](be) Fix clang formatting
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d002553
[fix](iceberg) Close final write ownership gaps
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3f1b475
[fix](iceberg) Gate standalone deletes on report ACK
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d01bebc
[fix](iceberg) Preserve external write ownership until final report
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6799e4e
[fix](iceberg) Avoid writer test suite collision
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403b77a
[test](be) Cover deferred upload report lifecycle
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025bd21
[fix](be) Declare external report Thrift parameter
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44cb06d
[fix](iceberg) Bound partition sorter memory admission
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7dbfd96
[fix](regression) Isolate MTMV job lookup
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78a36ec
[fix](test) Model Iceberg report ACK in merge sink UT
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c5f07d4
[fix](test) Preserve rebase safety invariants
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35a48c0
[fix](iceberg) Close external write review gaps
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190ebe5
[fix](fe) Fix Checkstyle import ordering
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b02a3ff
[fix](iceberg) Keep scan test compatible with catalog properties
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8314c90

Commits on Aug 10, 2026

[fix](azure) Isolate multipart blocks with upload UUIDs
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71abd40

Commits on Aug 11, 2026

[fix](iceberg) Preserve EOS memory reservation through close
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64eba05