Module org.elasticsearch.server

Package org.elasticsearch.index.codec.tsdb

Class DocValuesConsumerUtil

java.lang.Object

org.elasticsearch.index.codec.tsdb.DocValuesConsumerUtil

public class DocValuesConsumerUtil
extends Object

Contains logic to determine whether optimized merge can occur.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	DocValuesConsumerUtil.MergeStats	Pre-computed statistics for a field across all segments being merged.

Field Summary

Fields

Modifier and Type	Field	Description
static final DocValuesConsumerUtil.MergeStats	UNSUPPORTED	Sentinel indicating that optimized merge is not supported for the given field.

Constructor Summary

Constructors

Constructor	Description
DocValuesConsumerUtil()

Method Summary

Modifier and Type	Method	Description
static DocValuesConsumerUtil.MergeStats	compatibleWithOptimizedMerge(boolean optimizedMergeEnabled, org.apache.lucene.index.MergeState mergeState, org.apache.lucene.index.FieldInfo mergedFieldInfo)	Determines whether an optimized merge can be performed for the given field by inspecting segment metadata.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

UNSUPPORTED

public static final DocValuesConsumerUtil.MergeStats UNSUPPORTED

Sentinel indicating that optimized merge is not supported for the given field.

Constructor Details

DocValuesConsumerUtil

public DocValuesConsumerUtil()

Method Details

compatibleWithOptimizedMerge

public static DocValuesConsumerUtil.MergeStats compatibleWithOptimizedMerge(boolean optimizedMergeEnabled,
 org.apache.lucene.index.MergeState mergeState,
 org.apache.lucene.index.FieldInfo mergedFieldInfo)

Determines whether an optimized merge can be performed for the given field by inspecting segment metadata. An optimized merge is possible when all segments use TSDB doc values, the index is pre-sorted, and there are no deleted documents.

Parameters:

optimizedMergeEnabled - whether optimized merge is enabled

mergeState - the merge state containing segment metadata

mergedFieldInfo - the field to check

Returns:

pre-computed stats if optimized merge is possible, or UNSUPPORTED otherwise