Prefetch of heap block referenced from index #345
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This prepares PostgreSQL for compatibility with Neon's storage. Significant changes compared to the PostgreSQL 15 patchset include: - Backported changes for users and roles are no longer required - Use RM_NEON_ID for changes in WAL, instead of modifying core WAL records
Co-authored-by: Konstantin Knizhnik <[email protected]>
* Neon logical replication support for PG16 * Log heap rewrite file after creation. --------- Co-authored-by: Konstantin Knizhnik <[email protected]> Co-authored-by: Arseny Sher <[email protected]>
Co-authored-by: Konstantin Knizhnik <[email protected]>
* Update WAL buffers when restoring WAL at compute needed for LR * Fix copying data in WAL buffers --------- Co-authored-by: Konstantin Knizhnik <[email protected]>
PG16 adds new function to SMGR: zeroextend It's implementation in Neon actually wal-log zero pages of extended relation. This zero page is wal-logged using XLOG_FPI. As far as page is zero, the hole optimization (excluding from the image everything between pg_upper and pd_lower) doesn't work. This PR allows to set hole size to BLCKSZ in case of zero page (PageIsNull() returns true). --------- Co-authored-by: Konstantin Knizhnik <[email protected]>
* Prevent output callbacks from hearing about neon-file messages
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Integrate in Neion Tomas Vondra prefetch implementation for heap pages referenced by index.
See https://www.postgresql.org/message-id/flat/8c86c3a6-074e-6c88-3e7e-9452b6a37b9b%40enterprisedb.com#fc792f8d013215ace7971535a5744c83