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

Class DeletesSummarizer

java.lang.Object

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

All Implemented Interfaces:

Summarizer

public class DeletesSummarizer
extends Object
implements Summarizer

This summarizer tracks the total number of delete Keys seen and the total number of keys seen.

Since:

2.0.0

See Also:

• TableOperations.addSummarizers(String, org.apache.accumulo.core.client.summary.SummarizerConfiguration...)
• TooManyDeletesSelector

Nested Class Summary

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

Summarizer.Collector, Summarizer.Combiner, Summarizer.StatisticConsumer

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DELETES_STAT	The name of the statistics for the number of deletes.
static final String	TOTAL_STAT	The name of the statistics for the total number of keys.

Constructor Summary

Constructors

Constructor	Description
DeletesSummarizer()

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

Field Details

DELETES_STAT

public static final String DELETES_STAT

The name of the statistics for the number of deletes.

See Also:

• Constant Field Values

TOTAL_STAT

public static final String TOTAL_STAT

The name of the statistics for the total number of keys.

See Also:

• Constant Field Values

Constructor Details

DeletesSummarizer

public DeletesSummarizer()

Method Details

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