com.google.cloud.bigtable.grpc.async

Class BulkRead

java.lang.Object

com.google.cloud.bigtable.grpc.async.BulkRead

public class BulkRead
extends Object

This class combines a collection of ReadRowsRequests with a single row key into a single ReadRowsRequest with a RowSet which will result in fewer round trips. This class is not thread safe, and requires calling classes to make it thread safe.

Version:

$Id: $Id

Author:

sduskis

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	LOG Constant LOG

Constructor Summary

Constructors

Constructor and Description
BulkRead(BigtableDataClient client, BigtableTableName tableName, int batchSizes, ExecutorService threadPool) Constructor for BulkRead.

Method Summary

Modifier and Type	Method and Description
com.google.common.util.concurrent.ListenableFuture<FlatRow>	add(com.google.bigtable.v2.ReadRowsRequest request) Adds the key in the request to a batch read.
void	flush() Sends all remaining requests to the server.
int	getBatchSizes()

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final Logger LOG

Constant LOG

Constructor Detail

BulkRead

public BulkRead(BigtableDataClient client,
                BigtableTableName tableName,
                int batchSizes,
                ExecutorService threadPool)

Constructor for BulkRead.

Parameters:

client - a BigtableDataClient object.

tableName - a BigtableTableName object.

batchSizes - The number of keys to lookup per RPC.

threadPool - the ExecutorService to execute the batched reads on

Method Detail

add

public com.google.common.util.concurrent.ListenableFuture<FlatRow> add(com.google.bigtable.v2.ReadRowsRequest request)

Adds the key in the request to a batch read. The future will be resolved when the batch response is received.

Parameters:

request - a ReadRowsRequest with a single row key.

Returns:

a ListenableFuture that will be populated with the FlatRow that corresponds to the request

flush

public void flush()

Sends all remaining requests to the server. This method does not wait for the method to complete.

getBatchSizes

public int getBatchSizes()