SegmentSet.Add allow missing LastOffset #360
Merged
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Allows adding a "covering" segment to a
SegmentSet
. Given an non-empty set, this permits adding a segment that completely covers a subset of existing segments and hasLastOffset: 0
. This is needed in order to reduce backup and primary hints into the same set, which is needed byshards prune
in order to prune recovery logs conservatively.I realized that the other fix is truly not necessary, because the existing behavior of zeroing the final segment of each set of hints is retained, and serves the same purpose.
With this change, I'm able to successfully dry-run pruning all the shards in Estuary's production environment.
This change is