mirror of
https://github.com/neondatabase/neon.git
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ae527ef088
## Problem Storage controller restarts cause temporary unavailability from the control plane POV. See RFC for more details. ## Summary of changes * A couple of small refactors of the storage controller start-up sequence to make extending it easier. * A leader table is added to track the storage controller instance that's currently the leader (if any) * A peer client is added such that storage controllers can send `step_down` requests to each other (implemented in https://github.com/neondatabase/neon/pull/8512). * Implement the leader cut-over as described in the RFC * Add `start-as-candidate` flag to the storage controller to gate the rolling restart behaviour. When the flag is `false` (the default), the only change from the current start-up sequence is persisting the leader entry to the database.
47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
Rust
// @generated automatically by Diesel CLI.
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diesel::table! {
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controllers (address, started_at) {
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address -> Varchar,
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started_at -> Timestamptz,
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}
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}
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diesel::table! {
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metadata_health (tenant_id, shard_number, shard_count) {
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tenant_id -> Varchar,
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shard_number -> Int4,
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shard_count -> Int4,
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healthy -> Bool,
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last_scrubbed_at -> Timestamptz,
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}
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}
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diesel::table! {
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nodes (node_id) {
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node_id -> Int8,
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scheduling_policy -> Varchar,
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listen_http_addr -> Varchar,
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listen_http_port -> Int4,
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listen_pg_addr -> Varchar,
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listen_pg_port -> Int4,
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}
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}
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diesel::table! {
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tenant_shards (tenant_id, shard_number, shard_count) {
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tenant_id -> Varchar,
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shard_number -> Int4,
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shard_count -> Int4,
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shard_stripe_size -> Int4,
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generation -> Nullable<Int4>,
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generation_pageserver -> Nullable<Int8>,
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placement_policy -> Varchar,
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splitting -> Int2,
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config -> Text,
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scheduling_policy -> Varchar,
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}
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}
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diesel::allow_tables_to_appear_in_same_query!(controllers, metadata_health, nodes, tenant_shards,);
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