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## Problem PG16 (https://github.com/neondatabase/postgres/pull/327) 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. ## Summary of changes In case of zero page (`PageIsNull()` returns true) assume `hole_size=BLCKSZ` ## Checklist before requesting a review - [ ] I have performed a self-review of my code. - [ ] If it is a core feature, I have added thorough tests. - [ ] Do we need to implement analytics? if so did you add the relevant metrics to the dashboard? - [ ] If this PR requires public announcement, mark it with /release-notes label and add several sentences in this section. ## Checklist before merging - [ ] Do not forget to reformat commit message to not include the above checklist --------- Co-authored-by: Konstantin Knizhnik <knizhnik@neon.tech>
6 lines
195 B
JSON
6 lines
195 B
JSON
{
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"postgres-v16": "e3a22b72922055f9212eca12700190f118578362",
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"postgres-v15": "bc88f539312fcc4bb292ce94ae9db09ab6656e8a",
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"postgres-v14": "dd067cf656f6810a25aca6025633d32d02c5085a"
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}
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