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

Interface Summarizer.Combiner

Enclosing interface:

Summarizer

public static interface Summarizer.Combiner

A Combiner is used to merge statistics emitted from Summarizer.Collector.summarize(Summarizer.StatisticConsumer) and from previous invocations of itself.

Since:

2.0.0

Method Summary

Modifier and Type	Method	Description
void	merge(Map<String,Long> statistics1, Map<String,Long> statistics2)	This method should merge the statistics in the second map into the first map.

Method Details

merge

void merge(Map<String,Long> statistics1,
 Map<String,Long> statistics2)

This method should merge the statistics in the second map into the first map. Both maps may have statistics produced by a Summarizer.Collector or previous calls to this method.

If first map is too large after this call, then it may not be stored. See the comment on Summarizer.Collector.summarize(Summarizer.StatisticConsumer)