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prune: Correctly count used/duplicate blobs for partially compressed repos #3980

Merged
merged 2 commits into from
Nov 12, 2022
Merged

prune: Correctly count used/duplicate blobs for partially compressed repos #3980

merged 2 commits into from
Nov 12, 2022

Commits on Oct 22, 2022

  1. prune: Correctly count used/duplicate blobs for partially compressed … 

    …repos

Counting the first occurrence of a duplicate blob as used and counting
all other as duplicates, independent of which instance of the blob is
kept, is only accurate if all copies of the blob have the same size. This
is no longer the case for a repository containing both compressed and
uncompressed blobs.

Thus for duplicated blobs first count all instances as duplicates and
then subtract the actually used instance later on.
    @MichaelEischer
    MichaelEischer committed Oct 22, 2022
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  2. prune: add remark about non-deterministic blob selection

    @MichaelEischer
    MichaelEischer committed Oct 22, 2022
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