# Uses of Class
org.apache.lucene.index.TieredMergePolicy

Packages that use TieredMergePolicy
Package
Description
org.apache.lucene.index
Code to maintain and access indices.

## Uses of TieredMergePolicy in org.apache.lucene.index

Methods in org.apache.lucene.index that return TieredMergePolicy
Modifier and Type
Method
Description
`TieredMergePolicy`
TieredMergePolicy.`setDeletesPctAllowed(double v)`
Controls the maximum percentage of deleted documents that is tolerated in the index.
`TieredMergePolicy`
TieredMergePolicy.`setFloorSegmentMB(double v)`
Segments smaller than this size are merged more aggressively: They are candidates for full-flush merges, in order to reduce the number of segments in the index prior to opening a new point-in-time view of the index.
`TieredMergePolicy`
TieredMergePolicy.`setForceMergeDeletesPctAllowed(double v)`
When forceMergeDeletes is called, we only merge away a segment if its delete percentage is over this threshold.
`TieredMergePolicy`
TieredMergePolicy.`setMaxMergeAtOnce(int v)`
Maximum number of segments to be merged at a time during "normal" merging.
`TieredMergePolicy`
TieredMergePolicy.`setMaxMergedSegmentMB(double v)`
Maximum sized segment to produce during normal merging.
`TieredMergePolicy`
TieredMergePolicy.`setSegmentsPerTier(double v)`
Sets the allowed number of segments per tier.
`TieredMergePolicy`
TieredMergePolicy.`setTargetSearchConcurrency(int targetSearchConcurrency)`
Sets the target search concurrency.