Package org.apache.flink.runtime.execution.librarycache

Class BlobLibraryCacheManager

java.lang.Object

org.apache.flink.runtime.execution.librarycache.BlobLibraryCacheManager

All Implemented Interfaces:

LibraryCacheManager

@ThreadSafe
public class BlobLibraryCacheManager
extends Object
implements LibraryCacheManager

Provides facilities to download a set of libraries (typically JAR files) for a job from a PermanentBlobService and create a class loader with references to them.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	BlobLibraryCacheManager.ClassLoaderFactory

Nested classes/interfaces inherited from interface org.apache.flink.runtime.execution.librarycache.LibraryCacheManager

LibraryCacheManager.ClassLoaderHandle, LibraryCacheManager.ClassLoaderLease

Constructor Summary

Constructors

Constructor	Description
BlobLibraryCacheManager(PermanentBlobService blobService, BlobLibraryCacheManager.ClassLoaderFactory classLoaderFactory, boolean wrapsSystemClassLoader)

Method Summary

Modifier and Type	Method	Description
static BlobLibraryCacheManager.ClassLoaderFactory	defaultClassLoaderFactory(org.apache.flink.util.FlinkUserCodeClassLoaders.ResolveOrder classLoaderResolveOrder, String[] alwaysParentFirstPatterns, org.apache.flink.runtime.rpc.FatalErrorHandler fatalErrorHandlerJvmMetaspaceOomError, boolean checkClassLoaderLeak)
LibraryCacheManager.ClassLoaderLease	registerClassLoaderLease(org.apache.flink.api.common.JobID jobId)	Registers a new class loader lease for the given jobId.
void	shutdown()	Shuts the library cache manager down.

Methods inherited from class java.lang.Object

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

Constructor Details

BlobLibraryCacheManager

public BlobLibraryCacheManager(PermanentBlobService blobService,
 BlobLibraryCacheManager.ClassLoaderFactory classLoaderFactory,
 boolean wrapsSystemClassLoader)

Method Details

registerClassLoaderLease

public LibraryCacheManager.ClassLoaderLease registerClassLoaderLease(org.apache.flink.api.common.JobID jobId)

Description copied from interface: LibraryCacheManager

Registers a new class loader lease for the given jobId. The user code class loader for this job will be valid as long as there exists a valid lease for this job.

Specified by:

registerClassLoaderLease in interface LibraryCacheManager

Parameters:

jobId - jobId for which to register a new class loader lease

Returns:

a new class loader lease for the given job

shutdown

public void shutdown()

Description copied from interface: LibraryCacheManager

Shuts the library cache manager down. Thereby it will close all open LibraryCacheManager.ClassLoaderLease and release all registered user code class loaders.

Specified by:

shutdown in interface LibraryCacheManager

defaultClassLoaderFactory

public static BlobLibraryCacheManager.ClassLoaderFactory defaultClassLoaderFactory(org.apache.flink.util.FlinkUserCodeClassLoaders.ResolveOrder classLoaderResolveOrder,
 String[] alwaysParentFirstPatterns,
 @Nullable
 org.apache.flink.runtime.rpc.FatalErrorHandler fatalErrorHandlerJvmMetaspaceOomError,
 boolean checkClassLoaderLeak)