release/v1.2: Cherry-pick commits to enable and fix posting-list splits. #4742
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This reverts commit 1846c68.
This PR changes ReadPostingList to skip over the parts of a multi-part list so that they are not accessed the next time ReadPostingList is called. A multi-part posting list should only be accessed via the main key. Accessing the posting list via one of the other keys was causing issues during rollup and adding spurious keys to the database, which eventually caused reads to return nil in the Jepsen uid-set test.
martinmr
approved these changes
Feb 6, 2020
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Reviewed 1 of 1 files at r1, 2 of 2 files at r2.
Reviewable status:complete! all files reviewed, all discussions resolved (waiting on @manishrjain)
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Fixes #4733.
This change is