[v24.2.x] CORE-6835 Fix first time compacted segment upload #22924
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The test creates compacted topic without TS. It produces the data and waits until the data is compacted. After that it enables TS for the topic. The archiver has to be able to upload the data. (cherry picked from commit 9bbe429)
The archival_policy::find_segment method has a bug which causes it to skip compacted segments unconditionally. The code checks if the segment that it found is compacted and if this is the case it advances the iterator to the next segment. This operation causes ntp_archiver to skip one segment. The uploaded segment doesn't line up with the previous one so the validation error is triggered. The commit also implements handling of gaps in a safe way. We're not supposed to have gaps in the log (even in compacted logs) so the implementation has linear complexity. It's not supposed to be used and is good enough to hadnle unexpected unique glitch. (cherry picked from commit de01321)
The test validates logic which was removed. Previousy, the uploader was skipping single compacted segment and now it will upload compacted segments. So the upload in the test should start from 0. (cherry picked from commit e2fd980)
piyushredpanda
approved these changes
Aug 17, 2024
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Backport of PR #22812