Struct tantivy::indexer::MergeOperation

pub struct MergeOperation { /* private fields */ }

A MergeOperation has two roles. It carries all of the information required to describe a merge:

• target_opstamp is the opstamp up to which we want to consume the delete queue and reflect their deletes.
• segment_ids is the list of segment to be merged.

The second role is to ensure keep track of the fact that these segments are in merge and avoid starting a merge operation that may conflict with this one.

This works by tracking merge operations. When considering computing merge candidates, we simply list tracked merge operations and remove their segments from possible merge candidates.

Implementations

impl MergeOperation

pub fn target_opstamp(&self) -> Opstamp

Returns the opstamp up to which we want to consume the delete queue and reflect their deletes.

pub fn segment_ids(&self) -> &[SegmentId]

Returns the list of segment to be merged.