org.apache.accumulo.server.replication

Class StatusCombiner

java.lang.Object

org.apache.accumulo.core.iterators.WrappingIterator

org.apache.accumulo.core.iterators.Combiner

org.apache.accumulo.core.iterators.TypedValueCombiner<Replication.Status>

org.apache.accumulo.server.replication.StatusCombiner

All Implemented Interfaces:

OptionDescriber, SortedKeyValueIterator<Key,Value>

public class StatusCombiner
extends TypedValueCombiner<Replication.Status>

Defines the rules for combining multiple Replication.Status messages Messages that are "closed", stay closed. "Begin" and "end" always choose the maximum of the two.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StatusCombiner.StatusEncoder

Nested classes/interfaces inherited from class org.apache.accumulo.core.iterators.TypedValueCombiner

TypedValueCombiner.Encoder<V>

Nested classes/interfaces inherited from class org.apache.accumulo.core.iterators.Combiner

Combiner.ValueIterator

Nested classes/interfaces inherited from interface org.apache.accumulo.core.iterators.OptionDescriber

OptionDescriber.IteratorOptions

Field Summary

Fields inherited from class org.apache.accumulo.core.iterators.TypedValueCombiner

LOSSY

Fields inherited from class org.apache.accumulo.core.iterators.Combiner

ALL_OPTION, COLUMNS_OPTION

Constructor Summary

Constructors

Constructor and Description
StatusCombiner()

Method Summary

Methods

Modifier and Type	Method and Description
void	combine(Replication.Status.Builder combined, Replication.Status status) Update a Replication.Status.Builder with another Replication.Status
OptionDescriber.IteratorOptions	describeOptions()
void	init(SortedKeyValueIterator<Key,Value> source, Map<String,String> options, IteratorEnvironment env)
Replication.Status	typedReduce(Key key, Iterator<Replication.Status> iter)
boolean	validateOptions(Map<String,String> options)

Methods inherited from class org.apache.accumulo.core.iterators.TypedValueCombiner

deepCopy, reduce, setEncoder, setEncoder, setLossyness, testEncoder, testEncoder

Methods inherited from class org.apache.accumulo.core.iterators.Combiner

getTopKey, getTopValue, hasTop, next, seek, setColumns, setCombineAllColumns

Methods inherited from class org.apache.accumulo.core.iterators.WrappingIterator

getSource, setSource

Methods inherited from class java.lang.Object

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

Constructor Detail

StatusCombiner

public StatusCombiner()

Method Detail

describeOptions

public OptionDescriber.IteratorOptions describeOptions()

Specified by:

describeOptions in interface OptionDescriber

Overrides:

describeOptions in class TypedValueCombiner<Replication.Status>

validateOptions

public boolean validateOptions(Map<String,String> options)

Specified by:

validateOptions in interface OptionDescriber

Overrides:

validateOptions in class TypedValueCombiner<Replication.Status>

init

public void init(SortedKeyValueIterator<Key,Value> source,
        Map<String,String> options,
        IteratorEnvironment env)
          throws IOException

Specified by:

init in interface SortedKeyValueIterator<Key,Value>

Overrides:

init in class TypedValueCombiner<Replication.Status>

Throws:

IOException

typedReduce

public Replication.Status typedReduce(Key key,
                             Iterator<Replication.Status> iter)

Specified by:

typedReduce in class TypedValueCombiner<Replication.Status>

combine

public void combine(Replication.Status.Builder combined,
           Replication.Status status)

Update a Replication.Status.Builder with another Replication.Status

Parameters:

combined - The Builder to combine into

status - The Status we're combining