Vlad Lazar 21eeafaaa5 pageserver: simple fix for vectored read image layer skip (#9026) ...

## Problem

Different keyspaces may require different floor LSNs in vectored
delta layer visits. This patch adds support for such cases.

## Summary of changes

Different keyspaces wishing to read the same layer might
require different stop lsns (or lsn floor). The start LSN
of the read (or the lsn ceil) will always be the same.

With this observation, we fix skipping of image layers by
indexing the fringe by layer id plus lsn floor.

This is very simple, but means that we can visit delta layers twice
in certain cases. Still, I think it's very unlikely for any extra
merging to have taken place in this case, so perhaps it makes sense to go
with the simpler patch.

Fixes https://github.com/neondatabase/neon/issues/9012
Alternative to https://github.com/neondatabase/neon/pull/9025

2024-09-19 14:51:00 +01:00

..

benches

refactor(pageserver): rely on serde derive for toml deserialization (#7656)

2024-09-05 14:59:49 +02:00

client

feat(storcon): forward gc blocking and unblocking (#8956)

2024-09-06 22:42:55 +01:00

compaction

Remove unnecessary dependencies (#9000)

2024-09-17 17:55:45 +03:00

ctl

Remove unnecessary dependencies (#9000)

2024-09-17 17:55:45 +03:00

pagebench

pageserver: do vectored read on each dio-aligned section once (#8763)

2024-08-28 15:54:42 +01:00

src

pageserver: simple fix for vectored read image layer skip (#9026)

2024-09-19 14:51:00 +01:00

test_data

pageserver: add layer visibility calculation (#8511)

2024-08-01 09:25:35 +00:00

Cargo.toml

Remove unnecessary dependencies (#9000)

2024-09-17 17:55:45 +03:00