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Improve config options for missing and dropping db columns.

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Implement actual drop functionality.

Signed-off-by: Jason Volk <jason@zemos.net>
This commit is contained in:
Jason Volk
2025-11-02 21:33:12 +00:00
parent abded2d442
commit 7320d0a40b
7 changed files with 90 additions and 54 deletions
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23
src/core/config/mod.rs
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@@ -1288,19 +1288,20 @@ pub struct Config {
#[serde(default = "default_rocksdb_stats_level")]
pub rocksdb_stats_level: u8,
/// Erases data no longer reachable in the current schema. The developers
/// expect this to be set to true which simplifies the schema and prevents
/// accumulation of old schemas remaining in the codebase forever. If this
/// is set to false, old columns which are not described in the current
/// schema will be ignored rather than erased, leaking their space.
/// Ignores the list of dropped columns set by developers.
///
/// This can be set to false when moving between versions in ways which are
/// not recommended or otherwise forbidden, or for diagnostic and
/// development purposes; requiring preservation across such movements.
/// This should be set to true when knowingly moving between versions in
/// ways which are not recommended or otherwise forbidden, or for
/// diagnostic and development purposes; requiring preservation across such
/// movements.
///
/// default: true
#[serde(default = "true_fn")]
pub rocksdb_drop_missing_columns: bool,
/// The developer's list of dropped columns is meant to safely reduce space
/// by erasing data no longer in use. If this is set to true that storage
/// will not be reclaimed as intended.
///
/// default: false
#[serde(default)]
pub rocksdb_never_drop_columns: bool,
/// This is a password that can be configured that will let you login to the
/// server bot account (currently `@conduit`) for emergency troubleshooting