WIP: delta transitions in shared-memory mode#615

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Sunjeet wants to merge 33 commits intomasterfrom shared-memory

+1,196-182

Commits on May 22, 2023

Commits on Jun 10, 2023

Bugfix for empty transition file being mmapped, other refactor/cleanup
Sunjeet
committed

Commits on Jun 12, 2023

Gap encoded combined removed ordinals applicable conditionally- always on heap for now
Sunjeet
committed

Commits on Jun 13, 2023

Delta application performance- bulk copy fixed length data- but only works if offsets are same, TODO this is currently the biggest bottleneck
Sunjeet
committed

Commits on Jun 17, 2023

Delta target file- add schema name and shard num for diagnostic, disable bulk copy bits logic because it has bug
Sunjeet
committed

Commits on Jun 18, 2023

Commits on Jun 19, 2023

lifecycle staging files and cleanup
Sunjeet
committed

Commits on Jun 21, 2023

Delta transitions files under java.io.tmpdir
Sunjeet
committed