org.apache.hadoop.hbase.client.coprocessor

Class AsyncAggregationClient

java.lang.Object

org.apache.hadoop.hbase.client.coprocessor.AsyncAggregationClient

@InterfaceAudience.Public
public final class AsyncAggregationClient
extends Object

This client class is for invoking the aggregate functions deployed on the Region Server side via the AggregateService. This class will implement the supporting functionality for summing/processing the individual results obtained from the AggregateService for each region.

Method Summary

Modifier and Type	Method and Description
static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<Double>	avg(AsyncTable<?> table, ColumnInterpreter<R,S,P,Q,T> ci, Scan scan)
static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<R>	max(AsyncTable<?> table, ColumnInterpreter<R,S,P,Q,T> ci, Scan scan)
static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<R>	median(AsyncTable<AdvancedScanResultConsumer> table, ColumnInterpreter<R,S,P,Q,T> ci, Scan scan)
static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<R>	min(AsyncTable<?> table, ColumnInterpreter<R,S,P,Q,T> ci, Scan scan)
static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<Long>	rowCount(AsyncTable<?> table, ColumnInterpreter<R,S,P,Q,T> ci, Scan scan)
static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<Double>	std(AsyncTable<?> table, ColumnInterpreter<R,S,P,Q,T> ci, Scan scan)
static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<S>	sum(AsyncTable<?> table, ColumnInterpreter<R,S,P,Q,T> ci, Scan scan)

Methods inherited from class java.lang.Object

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

Method Detail

max

public static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<R> max(AsyncTable<?> table,
                                                                                                                                                               ColumnInterpreter<R,S,P,Q,T> ci,
                                                                                                                                                               Scan scan)

min

public static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<R> min(AsyncTable<?> table,
                                                                                                                                                               ColumnInterpreter<R,S,P,Q,T> ci,
                                                                                                                                                               Scan scan)

rowCount

public static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<Long> rowCount(AsyncTable<?> table,
                                                                                                                                                                       ColumnInterpreter<R,S,P,Q,T> ci,
                                                                                                                                                                       Scan scan)

sum

public static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<S> sum(AsyncTable<?> table,
                                                                                                                                                               ColumnInterpreter<R,S,P,Q,T> ci,
                                                                                                                                                               Scan scan)

avg

public static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<Double> avg(AsyncTable<?> table,
                                                                                                                                                                    ColumnInterpreter<R,S,P,Q,T> ci,
                                                                                                                                                                    Scan scan)

std

public static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<Double> std(AsyncTable<?> table,
                                                                                                                                                                    ColumnInterpreter<R,S,P,Q,T> ci,
                                                                                                                                                                    Scan scan)

median

public static <R,S,P extends com.google.protobuf.Message,Q extends com.google.protobuf.Message,T extends com.google.protobuf.Message> CompletableFuture<R> median(AsyncTable<AdvancedScanResultConsumer> table,
                                                                                                                                                                  ColumnInterpreter<R,S,P,Q,T> ci,
                                                                                                                                                                  Scan scan)