org.gridgain.grid.kernal.processors.hadoop.shuffle.collections

Interface GridHadoopMultimap

All Superinterfaces:

AutoCloseable

All Known Implementing Classes:

GridHadoopConcurrentHashMultimap, GridHadoopHashMultimap, GridHadoopHashMultimapBase, GridHadoopMultimapBase, GridHadoopSkipList

public interface GridHadoopMultimap
extends AutoCloseable

Multimap for hadoop intermediate results.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	GridHadoopMultimap.Adder Adder.
static interface	GridHadoopMultimap.Key Key add values to.
static interface	GridHadoopMultimap.Value Value.
static interface	GridHadoopMultimap.Visitor Key and values visitor.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
org.gridgain.grid.hadoop.GridHadoopTaskInput	input(Comparator<Object> groupCmp)
GridHadoopMultimap.Adder	startAdding()
boolean	visit(boolean ignoreLastVisited, GridHadoopMultimap.Visitor v) Incrementally visits all the keys and values in the map.

Method Detail

visit

boolean visit(boolean ignoreLastVisited,
            GridHadoopMultimap.Visitor v)
              throws org.gridgain.grid.GridException

Incrementally visits all the keys and values in the map.

Parameters:

ignoreLastVisited - Flag indicating that visiting must be started from the beginning.

v - Visitor.

Returns:

false If visiting was impossible.

Throws:

org.gridgain.grid.GridException

startAdding

GridHadoopMultimap.Adder startAdding()
                                     throws org.gridgain.grid.GridException

Returns:

Adder.

Throws:

org.gridgain.grid.GridException - If failed.

input

org.gridgain.grid.hadoop.GridHadoopTaskInput input(@Nullable
                                                 Comparator<Object> groupCmp)
                                                   throws org.gridgain.grid.GridException

Parameters:

groupCmp - Optional grouping comparator.

Returns:

Task input.

Throws:

org.gridgain.grid.GridException - If failed.

close

void close()

Specified by:

close in interface AutoCloseable