[v23.2.x] cloud_storage: use fragvec to hold replaced segments #16191
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Observed a large 1 to 2 MB allocation due to 50K plus segments in the replaced segments field of the manifest. Signed-off-by: Noah Watkins <noahwatkins@gmail.com> (cherry picked from commit 33a5e48)
andrwng
approved these changes
Jan 19, 2024
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Backport of PR #16160
#16187