Derek Collison 4d7cd26956 Add in support for segmented binary stream snapshots. ...

Streams with many interior deletes was causing issues due to the fact that the interior deletes were represented as a sorted []uint64.
This approach introduces 3 sub types of delete blocks, avl bitmask tree, a run length encoding, and the legacy format above.
We also take into account large interior deletes such that on receiving a snapshot we can skip things we already know about.

Signed-off-by: Derek Collison <derek@nats.io>

2023-07-03 08:41:33 -07:00

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