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[v25.3.x] Fix file cleanup issue in datalake::record_multiplexer#29277

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ballard26 merged 1 commit intoredpanda-data:v25.3.xfrom
ballard26:backport-pr-29249-v25.3.x-464
Jan 16, 2026
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[v25.3.x] Fix file cleanup issue in datalake::record_multiplexer#29277
ballard26 merged 1 commit intoredpanda-data:v25.3.xfrom
ballard26:backport-pr-29249-v25.3.x-464

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@ballard26 ballard26 commented Jan 15, 2026

Backport of PR #29249

Prior to this commit if a translation was aborted due to running out of
memory before `_result` in record_multiplexer was written to then the
files from any created writer would never be removed from disk.

(cherry picked from commit f0fc670)
(cherry picked from commit c6d9931a03bbad177c23a68ad0e49bc2836cd176)
(cherry picked from commit 0fddc3ad14844418f66d947d12f9ba468906a631)
@ballard26 ballard26 added this to the v25.3.5 milestone Jan 15, 2026
@ballard26 ballard26 added the kind/backport PRs targeting a stable branch label Jan 15, 2026
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CI test results

test results on build#79101
test_class test_method test_arguments test_kind job_url test_status passed reason test_history
MountUnmountIcebergTest test_simple_remount {"cloud_storage_type": 1} integration https://buildkite.com/redpanda/redpanda/builds/79101#019bc2f8-eb03-4820-b1fd-c4407e654251 FLAKY 10/11 Test PASSES after retries.No significant increase in flaky rate(baseline=0.2016, p0=1.0000, reject_threshold=0.0100. adj_baseline=0.4911, p1=0.0012, trust_threshold=0.5000) https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=MountUnmountIcebergTest&test_method=test_simple_remount

@ballard26 ballard26 merged commit f73b57b into redpanda-data:v25.3.x Jan 16, 2026
19 of 20 checks passed
@tyson-redpanda tyson-redpanda modified the milestones: v25.3.x-next, v25.3.6 Jan 21, 2026
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4 participants