Hi there, I’ve been exploring the WithNumVersionsToKeep() alongside badger’s stream api and the behavior Im seeing is that for any WithNumVersionsToKeep(n) where n > 1, badger keeps n + 1. Badger v2.2007.2 func main() { opts := badger.DefaultOptions("/tmp/badger").WithNumVersionsToKeep(2) db, er…

Hey @seanlaff , thanks for reaching out. When you flush a DB, all the keys which are at or below discardTs can be discarded from the LSM tree (see here ). When badger is run in unmanaged mode, this discardTs is governed by read timestamp (readTs). Each transaction calls txn.Discard() and hence update…

Badger keeping n+1 versions when using WithNumVersionsToKeep(n)

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seanlaff (Sean Lafferty) October 27, 2020, 9:13pm 4

Makes sense, thanks for the explanation

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Badger keeping n+1 versions when using WithNumVersionsToKeep(n)

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