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e5b95bc9dc
Previously we had different meanings for the bitmask of vector IOps. That has now been unified to "bit set = final result, no more scribbling". Furthermore, the LFC read path scribbled on pages that were already read; that's probably not a good thing so that's been fixed too. In passing, the read path of LFC has been updated to read only the requested pages into the provided buffers, thus reducing the IO size of vectorized IOs. ## Problem ## Summary of changes
neon extension consists of several parts:
shared preload library neon.so
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implements storage manager API and network communications with remote page server.
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walproposer: implements broadcast protocol between postgres and WAL safekeepers.
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control plane connector: Captures updates to roles/databases using ProcessUtility_hook and sends them to the control ProcessUtility_hook.
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remote extension server: Request compute_ctl to download extension files.
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file_cache: Local file cache is used to temporary store relations pages in local file system for better performance.
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relsize_cache: Relation size cache for better neon performance.
SQL functions in neon--*.sql
Utility functions to expose neon specific information to user and metrics collection. This extension is created in all databases in the cluster by default.