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ManifestDiff

risingwave_connector::source::iceberg::update_planner

Struct ManifestDiff 

Source 
struct ManifestDiff {
    current: SnapshotRef,
    parent_sequence: i64,
    added: Vec<ManifestFile>,
    removed: Vec<ManifestFile>,
    unchanged: Vec<ManifestFile>,
}
Expand description

Manifests are immutable, so a manifest path present in both manifest lists contributes the same entries to both snapshots and never needs to be read for the diff itself. The list-level first_row_id of an inherited data manifest may still be assigned after a V2 to V3 upgrade.

parent is the range base and current the range target. Snapshots strictly inside the range are not opened: only the live files of the two ends define the net change, so a file added and removed within the range produces no task.

File-level semantics assume the writer invariants: a data-file path is live at most once per snapshot and has at most one live delete artifact. Only the manifests read here are checked.

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§current: SnapshotRef§parent_sequence: i64§added: Vec<ManifestFile>

In current manifest-list order.

§removed: Vec<ManifestFile>

In parent manifest-list order.

§unchanged: Vec<ManifestFile>

In current manifest-list order.

Implementations§

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impl ManifestDiff

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async fn load( binding: &IcebergUpdateBinding, table: &Table, cursor: &IcebergUpdateCursor, ) -> ConnectorResult<Self>

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fn is_compaction(&self) -> bool

A range containing a compaction contains only that snapshot.

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fn current_sequence(&self) -> i64

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async fn validate( &self, binding: &IcebergUpdateBinding, table: &Table, ) -> ConnectorResult<()>

Pure compaction emits nothing, but its changed manifests must still be supported.

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