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Rename READMEs with .md extension, and fix links to them.

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Commit edba2e97 renamed pageserver/README to pageserver/README.md, but
forgot to update links to it. Fix.

Rename libs/postgres_ffi/README and safekeeper/README files to also
have the the .md extension, so that github can render them nicely.

Quote ascii-diagram in safekeeper/README.md so that it renders
correctly.
This commit is contained in:
chaitanya sharma
2022-04-29 14:22:46 +03:00
committed by Heikki Linnakangas
parent 2911eb084a
commit 76388abeb6
4 changed files with 9 additions and 7 deletions
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6
docs/README.md
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@@ -7,8 +7,8 @@
- [glossary.md](glossary.md) — Glossary of all the terms used in codebase.
- [multitenancy.md](multitenancy.md) — how multitenancy is organized in the pageserver and Zenith CLI.
- [sourcetree.md](sourcetree.md) — Overview of the source tree layeout.
- [pageserver/README](/pageserver/README) — pageserver overview.
- [postgres_ffi/README](/libs/postgres_ffi/README) — Postgres FFI overview.
- [pageserver/README.md](/pageserver/README.md) — pageserver overview.
- [postgres_ffi/README.md](/libs/postgres_ffi/README.md) — Postgres FFI overview.
- [test_runner/README.md](/test_runner/README.md) — tests infrastructure overview.
- [safekeeper/README](/safekeeper/README) — WAL service overview.
- [safekeeper/README.md](/safekeeper/README.md) — WAL service overview.
- [core_changes.md](core_changes.md) - Description of Zenith changes in Postgres core

4
docs/sourcetree.md
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@@ -28,7 +28,7 @@ The pageserver has a few different duties:
- Receive WAL from the WAL service and decode it.
- Replay WAL that's applicable to the chunks that the Page Server maintains
For more detailed info, see `/pageserver/README`
For more detailed info, see [/pageserver/README](/pageserver/README.md)
`/proxy`:
@@ -57,7 +57,7 @@ PostgreSQL extension that contains functions needed for testing and debugging.
The zenith WAL service that receives WAL from a primary compute nodes and streams it to the pageserver.
It acts as a holding area and redistribution center for recently generated WAL.
For more detailed info, see `/safekeeper/README`
For more detailed info, see [/safekeeper/README](/safekeeper/README.md)
`/workspace_hack`:
The workspace_hack crate exists only to pin down some dependencies.

0
libs/postgres_ffi/README → libs/postgres_ffi/README.md
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6
safekeeper/README → safekeeper/README.md
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@@ -7,6 +7,7 @@ replica. A replication slot is used in the primary to prevent the
primary from discarding WAL that hasn't been streamed to the WAL
service yet.
```
+--------------+ +------------------+
| | WAL | |
| Compute node | ----------> | WAL Service |
@@ -23,7 +24,7 @@ service yet.
| Pageservers |
| |
+--------------+
```
The WAL service consists of multiple WAL safekeepers that all store a
@@ -31,6 +32,7 @@ copy of the WAL. A WAL record is considered durable when the majority
of safekeepers have received and stored the WAL to local disk. A
consensus algorithm based on Paxos is used to manage the quorum.
```
+-------------------------------------------+
| WAL Service |
| |
@@ -48,7 +50,7 @@ consensus algorithm based on Paxos is used to manage the quorum.
| +------------+ |
| |
+-------------------------------------------+
```
The primary connects to the WAL safekeepers, so it works in a "push"
fashion. That's different from how streaming replication usually