Package org.apache.flink.runtime.blob

Class BlobClient

java.lang.Object

org.apache.flink.runtime.blob.BlobClient

All Implemented Interfaces:

Closeable, AutoCloseable

public final class BlobClient
extends Object
implements Closeable

The BLOB client can communicate with the BLOB server and either upload (PUT), download (GET), or delete (DELETE) BLOBs.

Constructor Summary

Constructors

Constructor	Description
BlobClient(InetSocketAddress serverAddress, Configuration clientConfig)	Instantiates a new BLOB client.

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	isClosed()
boolean	isConnected()
PermanentBlobKey	uploadFile(JobID jobId, Path file)	Uploads a single file to the PermanentBlobService of the given BlobServer.
static List<PermanentBlobKey>	uploadFiles(InetSocketAddress serverAddress, Configuration clientConfig, JobID jobId, List<Path> files)	Uploads the JAR files to the PermanentBlobService of the BlobServer at the given address with HA as configured.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlobClient

public BlobClient(InetSocketAddress serverAddress,
                  Configuration clientConfig)
           throws IOException

Instantiates a new BLOB client.

Parameters:

serverAddress - the network address of the BLOB server

clientConfig - additional configuration like SSL parameters required to connect to the blob server

Throws:

IOException - thrown if the connection to the BLOB server could not be established

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

isClosed

public boolean isClosed()

isConnected

public boolean isConnected()

uploadFiles

public static List<PermanentBlobKey> uploadFiles(InetSocketAddress serverAddress,
                                                 Configuration clientConfig,
                                                 JobID jobId,
                                                 List<Path> files)
                                          throws IOException

Uploads the JAR files to the PermanentBlobService of the BlobServer at the given address with HA as configured.

Parameters:

serverAddress - Server address of the BlobServer

clientConfig - Any additional configuration for the blob client

jobId - ID of the job this blob belongs to (or null if job-unrelated)

files - List of files to upload

Throws:

IOException - if the upload fails

uploadFile

public PermanentBlobKey uploadFile(JobID jobId,
                                   Path file)
                            throws IOException

Uploads a single file to the PermanentBlobService of the given BlobServer.

Parameters:

jobId - ID of the job this blob belongs to (or null if job-unrelated)

file - file to upload

Throws:

IOException - if the upload fails