org.elasticsearch.index.fielddata.plain

Class ParentChildIndexFieldData.ParentChildEstimator

java.lang.Object

org.elasticsearch.index.fielddata.plain.ParentChildIndexFieldData.ParentChildEstimator

All Implemented Interfaces:

AbstractIndexFieldData.PerValueEstimator

Enclosing class:

ParentChildIndexFieldData

public class ParentChildIndexFieldData.ParentChildEstimator
extends Object
implements AbstractIndexFieldData.PerValueEstimator

Estimator that wraps parent/child id field data by wrapping the data in a RamAccountingTermsEnum.

Constructor Summary

Constructors

Constructor and Description
ParentChildIndexFieldData.ParentChildEstimator(CircuitBreaker breaker, org.apache.lucene.index.TermsEnum filteredEnum)

Method Summary

Methods

Modifier and Type	Method and Description
void	afterLoad(org.apache.lucene.index.TermsEnum termsEnum, long actualUsed) Adjusts the breaker based on the difference between the actual usage and the aggregated estimations.
org.apache.lucene.index.TermsEnum	beforeLoad(org.apache.lucene.index.Terms terms) Wraps the already filtered TermsEnum in a RamAccountingTermsEnum and returns it
long	bytesPerValue(org.apache.lucene.util.BytesRef term) General overhead for ids is 2 times the length of the ID

Methods inherited from class java.lang.Object

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

Constructor Detail

ParentChildIndexFieldData.ParentChildEstimator

public ParentChildIndexFieldData.ParentChildEstimator(CircuitBreaker breaker,
                                              org.apache.lucene.index.TermsEnum filteredEnum)

Method Detail

bytesPerValue

public long bytesPerValue(org.apache.lucene.util.BytesRef term)

General overhead for ids is 2 times the length of the ID

Specified by:

bytesPerValue in interface AbstractIndexFieldData.PerValueEstimator

Returns:

the number of bytes for the given term

beforeLoad

public org.apache.lucene.index.TermsEnum beforeLoad(org.apache.lucene.index.Terms terms)
                                             throws IOException

Wraps the already filtered TermsEnum in a RamAccountingTermsEnum and returns it

Specified by:

beforeLoad in interface AbstractIndexFieldData.PerValueEstimator

Parameters:

terms - terms to be estimated

Returns:

A TermsEnum for the given terms

Throws:

IOException

afterLoad

public void afterLoad(org.apache.lucene.index.TermsEnum termsEnum,
             long actualUsed)

Adjusts the breaker based on the difference between the actual usage and the aggregated estimations.

Specified by:

afterLoad in interface AbstractIndexFieldData.PerValueEstimator

Parameters:

termsEnum - terms that were loaded

actualUsed - actual field data memory usage