Package org.apache.accumulo.core.client.summary.summarizers

Class EntryLengthSummarizer

java.lang.Object

org.apache.accumulo.core.client.summary.summarizers.EntryLengthSummarizer

All Implemented Interfaces:

Summarizer

public class EntryLengthSummarizer
extends Object
implements Summarizer

Summarizer that computes summary information about field lengths. Specifically key length, row length, family length, qualifier length, visibility length, and value length. Incrementally computes minimum, maximum, count, sum, and log2 histogram of the lengths.

Since:

2.0.0

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.accumulo.core.client.summary.Summarizer

Summarizer.Collector, Summarizer.Combiner, Summarizer.StatisticConsumer

Constructor Summary

Constructors

Constructor	Description
EntryLengthSummarizer()

Method Summary

Modifier and Type	Method	Description
Summarizer.Collector	collector(SummarizerConfiguration sc)	Factory method that creates a Summarizer.Collector based on configuration.
Summarizer.Combiner	combiner(SummarizerConfiguration sc)	Factory method that creates a Summarizer.Combiner.

Methods inherited from class java.lang.Object

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

Constructor Detail

EntryLengthSummarizer

public EntryLengthSummarizer()

Method Detail

collector

public Summarizer.Collector collector(SummarizerConfiguration sc)

Description copied from interface: Summarizer

Factory method that creates a Summarizer.Collector based on configuration. Each Summarizer.Collector created by this method should be independent and have its own internal state. Accumulo uses a Collector to generate summary statistics about a sequence of key values written to a file.

Specified by:

collector in interface Summarizer

combiner

public Summarizer.Combiner combiner(SummarizerConfiguration sc)

Description copied from interface: Summarizer

Factory method that creates a Summarizer.Combiner. Accumulo will only use the created Combiner to merge data from Summarizer.Collectors created using the same SummarizerConfiguration.

Specified by:

combiner in interface Summarizer