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## Problem `pgvector` requires a patch to work well with Neon (a patch created by @hlinnaka) ## Summary of changes - Apply the patch to `pgvector`
57 lines
1.6 KiB
Diff
57 lines
1.6 KiB
Diff
From 5518a806a70e7f40d5054a762ccda7d5e6b0d31c Mon Sep 17 00:00:00 2001
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From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
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Date: Tue, 30 Jan 2024 14:33:00 +0200
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Subject: [PATCH] Make v0.6.0 work with Neon
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Now that the WAL-logging happens as a separate step at the end of the
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build, we need a few neon-specific hints to make it work.
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---
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src/hnswbuild.c | 28 ++++++++++++++++++++++++++++
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1 file changed, 28 insertions(+)
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diff --git a/src/hnswbuild.c b/src/hnswbuild.c
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index 680789ba9044900eac9321844ee2a808a4a2ed12..41c5b709bcb2367ac8b8c498788ecac4c1148b74 100644
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--- a/src/hnswbuild.c
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+++ b/src/hnswbuild.c
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@@ -1089,13 +1089,41 @@ BuildIndex(Relation heap, Relation index, IndexInfo *indexInfo,
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SeedRandom(42);
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#endif
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+#ifdef NEON_SMGR
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+ smgr_start_unlogged_build(index->rd_smgr);
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+#endif
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+
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InitBuildState(buildstate, heap, index, indexInfo, forkNum);
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BuildGraph(buildstate, forkNum);
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+#ifdef NEON_SMGR
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+ smgr_finish_unlogged_build_phase_1(index->rd_smgr);
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+#endif
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+
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if (RelationNeedsWAL(index))
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+ {
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log_newpage_range(index, forkNum, 0, RelationGetNumberOfBlocks(index), true);
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+#ifdef NEON_SMGR
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+ {
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+#if PG_VERSION_NUM >= 160000
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+ RelFileLocator rlocator = index->rd_smgr->smgr_rlocator.locator;
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+#else
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+ RelFileNode rlocator = index->rd_smgr->smgr_rnode.node;
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+#endif
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+
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+ SetLastWrittenLSNForBlockRange(XactLastRecEnd, rlocator,
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+ MAIN_FORKNUM, 0, RelationGetNumberOfBlocks(index));
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+ SetLastWrittenLSNForRelation(XactLastRecEnd, rlocator, MAIN_FORKNUM);
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+ }
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+#endif
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+ }
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+
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+#ifdef NEON_SMGR
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+ smgr_end_unlogged_build(index->rd_smgr);
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+#endif
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+
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FreeBuildState(buildstate);
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}
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