com.starrocks.connector.spark.backend

Class BackendClient

java.lang.Object

com.starrocks.connector.spark.backend.BackendClient

public class BackendClient
extends Object

Client to request StarRocks BE

Constructor Summary

Constructors

Constructor and Description
BackendClient(Routing routing, Settings settings)

Method Summary

Modifier and Type	Method and Description
void	closeScanner(com.starrocks.thrift.TScanCloseParams closeParams) close an scanner.
com.starrocks.thrift.TScanBatchResult	getNext(com.starrocks.thrift.TScanNextBatchParams nextBatchParams) get next row batch from StarRocks BE
com.starrocks.thrift.TScanOpenResult	openScanner(com.starrocks.thrift.TScanOpenParams openParams) Open a scanner for reading StarRocks data.

Methods inherited from class java.lang.Object

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

Constructor Detail

BackendClient

public BackendClient(Routing routing,
                     Settings settings)
              throws ConnectedFailedException

Throws:

ConnectedFailedException

Method Detail

openScanner

public com.starrocks.thrift.TScanOpenResult openScanner(com.starrocks.thrift.TScanOpenParams openParams)
                                                 throws ConnectedFailedException

Open a scanner for reading StarRocks data.

Parameters:

openParams - thrift struct to required by request

Returns:

scan open result

Throws:

ConnectedFailedException - throw if cannot connect to StarRocks BE

getNext

public com.starrocks.thrift.TScanBatchResult getNext(com.starrocks.thrift.TScanNextBatchParams nextBatchParams)
                                              throws StarrocksException

get next row batch from StarRocks BE

Parameters:

nextBatchParams - thrift struct to required by request

Returns:

scan batch result

Throws:

ConnectedFailedException - throw if cannot connect to StarRocks BE

StarrocksException

closeScanner

public void closeScanner(com.starrocks.thrift.TScanCloseParams closeParams)

close an scanner.

Parameters:

closeParams - thrift struct to required by request