com.aliyun.odps.tunnel.io

Class RawTunnelRecordReader

java.lang.Object

com.aliyun.odps.commons.proto.ProtobufRecordStreamReader

com.aliyun.odps.tunnel.io.RawTunnelRecordReader

All Implemented Interfaces:

RecordReader, Closeable, AutoCloseable

public class RawTunnelRecordReader
extends com.aliyun.odps.commons.proto.ProtobufRecordStreamReader

Created by zhenhong.gzh on 16/1/5.

Constructor Summary

Constructors

Constructor and Description
RawTunnelRecordReader(TableSchema schema, List<Column> columns, com.aliyun.odps.commons.transport.Connection conn, CompressOption option)

Method Summary

Modifier and Type	Method and Description
void	close()
static RawTunnelRecordReader	createInstanceTunnelReader(long start, long count, CompressOption compress, List<Column> columns, com.aliyun.odps.rest.RestClient restClient, InstanceTunnel.DownloadSession session)
static RawTunnelRecordReader	createTableTunnelReader(long start, long count, CompressOption compress, List<Column> columns, com.aliyun.odps.rest.RestClient restClient, TableTunnel.DownloadSession session) 创建不可靠的 tunnel record reader

Methods inherited from class com.aliyun.odps.commons.proto.ProtobufRecordStreamReader

createEmptyRecord, getTotalBytes, read, read, readArray, readArray, readMap, readMap, readStruct, setTransform

Methods inherited from class java.lang.Object

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

Constructor Detail

RawTunnelRecordReader

public RawTunnelRecordReader(TableSchema schema,
                             List<Column> columns,
                             com.aliyun.odps.commons.transport.Connection conn,
                             CompressOption option)
                      throws IOException

Throws:

IOException

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class com.aliyun.odps.commons.proto.ProtobufRecordStreamReader

Throws:

IOException

createInstanceTunnelReader

public static RawTunnelRecordReader createInstanceTunnelReader(long start,
                                                               long count,
                                                               CompressOption compress,
                                                               List<Column> columns,
                                                               com.aliyun.odps.rest.RestClient restClient,
                                                               InstanceTunnel.DownloadSession session)
                                                        throws TunnelException,
                                                               IOException

Throws:

TunnelException

IOException

createTableTunnelReader

public static RawTunnelRecordReader createTableTunnelReader(long start,
                                                            long count,
                                                            CompressOption compress,
                                                            List<Column> columns,
                                                            com.aliyun.odps.rest.RestClient restClient,
                                                            TableTunnel.DownloadSession session)
                                                     throws IOException,
                                                            TunnelException

创建不可靠的 tunnel record reader

Parameters:

start - 本次要读取记录的起始位置

count - 本次要读取记录的数量

columns - 需要读取的列 Column

compress - CompressOption

session - 本次读取所在 session

restClient - 本次请求使用的 tunnelserverclient

Throws:

IOException

TunnelException