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part of https://github.com/neondatabase/neon/issues/8653 Disable create tablespace stmt. It turns out it requires much less effort to do the regress test mode flag than patching the test cases, and given that we might need to support tablespaces in the future, I decided to add a new flag `regress_test_mode` to change the behavior of create tablespace. Tested manually that without setting regress_test_mode, create tablespace will be rejected. --------- Signed-off-by: Alex Chi Z <chi@neon.tech> Co-authored-by: Heikki Linnakangas <heikki@neon.tech>
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.