org.elasticsearch.index.shard

クラス ElasticsearchMergePolicy

java.lang.Object

org.apache.lucene.index.MergePolicy

org.elasticsearch.index.shard.ElasticsearchMergePolicy

public final class ElasticsearchMergePolicy
extends org.apache.lucene.index.MergePolicy

A MergePolicy that upgrades segments and can upgrade merges.

It can be useful to use the background merging process to upgrade segments, for example when we perform internal changes that imply different index options or when a user modifies his mapping in non-breaking ways: we could imagine using this merge policy to be able to add doc values to fields after the fact or on the opposite to remove them.

For now, this MergePolicy takes care of moving versions that used to be stored as payloads to numeric doc values.

ネストされたクラスのサマリー

クラスから継承されたネストされたクラス/インタフェース org.apache.lucene.index.MergePolicy

org.apache.lucene.index.MergePolicy.DocMap, org.apache.lucene.index.MergePolicy.MergeAbortedException, org.apache.lucene.index.MergePolicy.MergeException, org.apache.lucene.index.MergePolicy.MergeSpecification, org.apache.lucene.index.MergePolicy.OneMerge

フィールドのサマリー

クラスから継承されたフィールド org.apache.lucene.index.MergePolicy

DEFAULT_MAX_CFS_SEGMENT_SIZE, DEFAULT_NO_CFS_RATIO, maxCFSSegmentSize, noCFSRatio

コンストラクタのサマリー

コンストラクタ

コンストラクタと説明
ElasticsearchMergePolicy(org.apache.lucene.index.MergePolicy delegate)

メソッドのサマリー

修飾子とタイプ	メソッドと説明
org.apache.lucene.index.MergePolicy.MergeSpecification	findForcedDeletesMerges(org.apache.lucene.index.SegmentInfos segmentInfos, org.apache.lucene.index.IndexWriter writer)
org.apache.lucene.index.MergePolicy.MergeSpecification	findForcedMerges(org.apache.lucene.index.SegmentInfos segmentInfos, int maxSegmentCount, Map<org.apache.lucene.index.SegmentCommitInfo,Boolean> segmentsToMerge, org.apache.lucene.index.IndexWriter writer)
org.apache.lucene.index.MergePolicy.MergeSpecification	findMerges(org.apache.lucene.index.MergeTrigger mergeTrigger, org.apache.lucene.index.SegmentInfos segmentInfos, org.apache.lucene.index.IndexWriter writer)
void	setUpgradeInProgress(boolean upgrade, boolean onlyAncientSegments) When upgrade is true, running a force merge will upgrade any segments written with older versions.
String	toString()
boolean	useCompoundFile(org.apache.lucene.index.SegmentInfos segments, org.apache.lucene.index.SegmentCommitInfo newSegment, org.apache.lucene.index.IndexWriter writer)

クラスから継承されたメソッド org.apache.lucene.index.MergePolicy

getMaxCFSSegmentSizeMB, getNoCFSRatio, isMerged, setMaxCFSSegmentSizeMB, setNoCFSRatio, size

クラスから継承されたメソッド java.lang.Object

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

コンストラクタの詳細

ElasticsearchMergePolicy

public ElasticsearchMergePolicy(org.apache.lucene.index.MergePolicy delegate)

パラメータ:

delegate - the merge policy to wrap

メソッドの詳細

findMerges

public org.apache.lucene.index.MergePolicy.MergeSpecification findMerges(org.apache.lucene.index.MergeTrigger mergeTrigger,
                                                                         org.apache.lucene.index.SegmentInfos segmentInfos,
                                                                         org.apache.lucene.index.IndexWriter writer)
                                                                  throws IOException

定義:

findMerges クラス内 org.apache.lucene.index.MergePolicy

例外:

IOException

findForcedMerges

public org.apache.lucene.index.MergePolicy.MergeSpecification findForcedMerges(org.apache.lucene.index.SegmentInfos segmentInfos,
                                                                               int maxSegmentCount,
                                                                               Map<org.apache.lucene.index.SegmentCommitInfo,Boolean> segmentsToMerge,
                                                                               org.apache.lucene.index.IndexWriter writer)
                                                                        throws IOException

定義:

findForcedMerges クラス内 org.apache.lucene.index.MergePolicy

例外:

IOException

findForcedDeletesMerges

public org.apache.lucene.index.MergePolicy.MergeSpecification findForcedDeletesMerges(org.apache.lucene.index.SegmentInfos segmentInfos,
                                                                                      org.apache.lucene.index.IndexWriter writer)
                                                                               throws IOException

定義:

findForcedDeletesMerges クラス内 org.apache.lucene.index.MergePolicy

例外:

IOException

useCompoundFile

public boolean useCompoundFile(org.apache.lucene.index.SegmentInfos segments,
                               org.apache.lucene.index.SegmentCommitInfo newSegment,
                               org.apache.lucene.index.IndexWriter writer)
                        throws IOException

オーバーライド:

useCompoundFile クラス内 org.apache.lucene.index.MergePolicy

例外:

IOException

setUpgradeInProgress

public void setUpgradeInProgress(boolean upgrade,
                                 boolean onlyAncientSegments)

When upgrade is true, running a force merge will upgrade any segments written with older versions. This will apply to the next call to IndexWriter.forceMerge(int) that is handled by this MergePolicy, as well as cascading calls made by IndexWriter.

toString

public String toString()

オーバーライド:

toString クラス内 Object