Uses of Package
org.apache.flink.util

Packages that use org.apache.flink.util

Package	Description
org.apache.flink.api.common
org.apache.flink.api.common.accumulators
org.apache.flink.api.common.functions
org.apache.flink.api.common.functions.util
org.apache.flink.api.common.operators
org.apache.flink.api.common.operators.base
org.apache.flink.api.common.serialization
org.apache.flink.api.connector.sink2
org.apache.flink.api.connector.source
org.apache.flink.api.connector.source.lib
org.apache.flink.core.execution
org.apache.flink.core.fs
org.apache.flink.util

Classes in org.apache.flink.util used by org.apache.flink.api.common

Class	Description
AbstractID	A statistically unique identification number.
OptionalFailure	Wrapper around an object representing either a success (with a given value) or a failure cause.
Visitable	This interface marks types as visitable during a traversal.
Visitor	A visitor encapsulates functionality that is applied to each node in the process of a traversal of a tree or DAG.

Classes in org.apache.flink.util used by org.apache.flink.api.common.accumulators

Class	Description
OptionalFailure	Wrapper around an object representing either a success (with a given value) or a failure cause.
SerializedValue	This class is used to transfer (via serialization) objects whose classes are not available in the system class loader.

Classes in org.apache.flink.util used by org.apache.flink.api.common.functions

Class	Description
Collector	Collects a record and forwards it.

Classes in org.apache.flink.util used by org.apache.flink.api.common.functions.util

Class	Description
Collector	Collects a record and forwards it.
UserCodeClassLoader	UserCodeClassLoader allows to register release hooks for a user code class loader.

Classes in org.apache.flink.util used by org.apache.flink.api.common.operators

Class	Description
FlinkRuntimeException	Base class of all Flink-specific unchecked exceptions.
Visitable	This interface marks types as visitable during a traversal.
Visitor	A visitor encapsulates functionality that is applied to each node in the process of a traversal of a tree or DAG.

Classes in org.apache.flink.util used by org.apache.flink.api.common.operators.base

Class	Description
Collector	Collects a record and forwards it.
Visitable	This interface marks types as visitable during a traversal.
Visitor	A visitor encapsulates functionality that is applied to each node in the process of a traversal of a tree or DAG.

Classes in org.apache.flink.util used by org.apache.flink.api.common.serialization

Class	Description
Collector	Collects a record and forwards it.
TernaryBoolean	A ternary boolean, which can have the values 'true', 'false', or 'undefined'.
UserCodeClassLoader	UserCodeClassLoader allows to register release hooks for a user code class loader.

Classes in org.apache.flink.util used by org.apache.flink.api.connector.sink2

Class	Description
UserCodeClassLoader	UserCodeClassLoader allows to register release hooks for a user code class loader.

Classes in org.apache.flink.util used by org.apache.flink.api.connector.source

Class	Description
UserCodeClassLoader	UserCodeClassLoader allows to register release hooks for a user code class loader.

Classes in org.apache.flink.util used by org.apache.flink.api.connector.source.lib

Class	Description
NumberSequenceIterator	The NumberSequenceIterator is an iterator that returns a sequence of numbers (as Long)s.

Classes in org.apache.flink.util used by org.apache.flink.core.execution

Class	Description
AbstractID	A statistically unique identification number.

Classes in org.apache.flink.util used by org.apache.flink.core.fs

Class	Description
AbstractAutoCloseableRegistry	This is the abstract base class for registries that allow to register instances of Closeable, which are all closed if this registry is closed.
RefCounted	Interface to simply add reference counting functionality.
WrappingProxy	Interface for objects that wrap another object and proxy (possibly a subset) of the methods of that object.

Classes in org.apache.flink.util used by org.apache.flink.util

Class	Description
AbstractID	A statistically unique identification number.
AbstractParameterTool	This class provides common utility methods of ParameterTool and MultipleParameterTool.
CloseableIterable	This interface represents an iterable that is also closeable.
CloseableIterator	This interface represents an Iterator that is also AutoCloseable.
CompressedSerializedValue	An extension of SerializedValue that compresses the value after the serialization.
FatalExitExceptionHandler	Handler for uncaught exceptions that will log the exception and kill the process afterwards.
FileLock	A file lock used for avoiding race condition among multiple threads/processes.
FlinkException	Base class of all Flink-specific checked exceptions.
FlinkRuntimeException	Base class of all Flink-specific unchecked exceptions.
FlinkUserCodeClassLoader	This class loader accepts a custom handler if an exception occurs in FlinkUserCodeClassLoader.loadClass(String, boolean).
FlinkUserCodeClassLoaders.ResolveOrder	Class resolution order for Flink URL ClassLoader.
InstantiationUtil.ClassLoaderObjectInputStream	A custom ObjectInputStream that can load classes using a specific ClassLoader.
LinkedOptionalMap	A LinkedOptionalMap is an order preserving map (like LinkedHashMap) where keys have a unique string name, but are optionally present, and the values are optional.
LinkedOptionalMap.ConsumerWithException	A Consumer that throws exceptions.
LinkedOptionalMap.KeyValue	Key-value pairs stored by the underlying map.
LinkedOptionalMap.MergeResult	The result of merging two LinkedOptionalMaps using LinkedOptionalMap.mergeRightIntoLeft(LinkedOptionalMap, LinkedOptionalMap).
LongValueSequenceIterator	The LongValueSequenceIterator is an iterator that returns a sequence of numbers (as LongValue)s.
MdcUtils.MdcCloseable	AutoCloseable that restores the MDC contents on close.
MultipleParameterTool	This class provides simple utility methods for reading and parsing program arguments from different sources.
MutableURLClassLoader	URL class loader that exposes the `addURL` method in URLClassLoader.
NetUtils.Port	Port wrapper class which holds a FileLock until it releases.
NetUtils.SocketFactory	A factory for a local socket from port number.
NumberSequenceIterator	The NumberSequenceIterator is an iterator that returns a sequence of numbers (as Long)s.
OperatingSystem	An enumeration indicating the operating system that the JVM runs on.
OptionalConsumer	Utility class which allows to run code depending on whether the optional has a value or is empty.
OptionalFailure	Wrapper around an object representing either a success (with a given value) or a failure cause.
OutputTag	An OutputTag is a typed and named tag to use for tagging side outputs of an operator.
ParameterTool	This class provides simple utility methods for reading and parsing program arguments from different sources.
ProcessorArchitecture	The processor architecture of the this system.
ProcessorArchitecture.MemoryAddressSize	The memory address size of the processor.
Reference	Wrapper class that allows to express whether the value is borrowed or owned.
ReflectionUtil.FullTypeInfo	Container for the full type information of a type.
ResourceGuard.Lease	A lease is issued by the ResourceGuard as result of calls to ResourceGuard.acquireResource().
SerializedValue	This class is used to transfer (via serialization) objects whose classes are not available in the system class loader.
SimpleUserCodeClassLoader	Simple UserCodeClassLoader implementation which assumes that the provided class loader will never be released and, hence, will never execute the release hooks.
SplittableIterator	Abstract base class for iterators that can split themselves into multiple disjoint iterators.
StateMigrationException	Base class for state migration related exceptions.
TemporaryClassLoaderContext	Sets a context class loader in a "try-with-resources" pattern.
TernaryBoolean	A ternary boolean, which can have the values 'true', 'false', or 'undefined'.
UserCodeClassLoader	UserCodeClassLoader allows to register release hooks for a user code class loader.
Utils.ChecksumHashCode	Accumulator of Utils.ChecksumHashCode.
Visitable	This interface marks types as visitable during a traversal.
Visitor	A visitor encapsulates functionality that is applied to each node in the process of a traversal of a tree or DAG.
WrappingProxy	Interface for objects that wrap another object and proxy (possibly a subset) of the methods of that object.