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Enable hot standby PostgreSQL replicas.

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Notes:
 - This still needs UI support from the Console
 - I've not tuned any GUCs for PostgreSQL to make this work better
 - Safekeeper has gotten a tweak in which WAL is sent and how: It now
sends zero-ed WAL data from the start of the timeline's first segment up to
the first byte of the timeline to be compatible with normal PostgreSQL
WAL streaming.
 - This includes the commits of #3714 

Fixes one part of https://github.com/neondatabase/neon/issues/769

Co-authored-by: Anastasia Lubennikova <anastasia@neon.tech>
This commit is contained in:
MMeent
2023-04-27 15:26:44 +02:00
committed by GitHub
parent 5b911e1f9f
commit e6ec2400fc
26 changed files with 851 additions and 121 deletions
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7
compute_tools/src/pg_helpers.rs
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@@ -94,6 +94,7 @@ impl PgOptionsSerialize for GenericOptions {
pub trait GenericOptionsSearch {
fn find(&self, name: &str) -> Option<String>;
fn find_ref(&self, name: &str) -> Option<&GenericOption>;
}
impl GenericOptionsSearch for GenericOptions {
@@ -103,6 +104,12 @@ impl GenericOptionsSearch for GenericOptions {
let op = ops.iter().find(|s| s.name == name)?;
op.value.clone()
}
/// Lookup option by name, returning ref
fn find_ref(&self, name: &str) -> Option<&GenericOption> {
let ops = self.as_ref()?;
ops.iter().find(|s| s.name == name)
}
}
pub trait RoleExt {