Alex Chi Z c76b74c50d semantic layer map operations (#4618) ...

## Problem

ref https://github.com/neondatabase/neon/issues/4373

## Summary of changes

A step towards immutable layer map. I decided to finish the refactor
with this new approach and apply
https://github.com/neondatabase/neon/pull/4455 on this patch later.

In this PR, we moved all modifications of the layer map to one place
with semantic operations like `initialize_local_layers`,
`finish_compact_l0`, `finish_gc_timeline`, etc, which is now part
of `LayerManager`. This makes it easier to build new features upon
this PR:

* For immutable storage state refactor, we can simply replace the layer
map with `ArcSwap<LayerMap>` and remove the `layers` lock. Moving
towards it requires us to put all layer map changes in a single place as
in https://github.com/neondatabase/neon/pull/4455.
* For manifest, we can write to manifest in each of the semantic
functions.

---------

Signed-off-by: Alex Chi Z <chi@neon.tech>
Co-authored-by: Christian Schwarz <christian@neon.tech>

2023-07-13 17:35:27 +03:00

..

benches

remove LayerDescriptor and use LayerObject for tests (#4637)

2023-07-10 19:40:37 +03:00

ctl

pagectl: separate xy margin for draw timeline (#4669)

2023-07-10 09:22:06 -04:00

fixtures

walredo: simple tests and bench updates (#3045)

2023-01-16 18:24:45 +02:00

src

semantic layer map operations (#4618)

2023-07-13 17:35:27 +03:00

Cargo.toml

cold starts: basebackup compression (#4482)

2023-07-11 13:11:23 -04:00