# Package org.apache.ignite.spi

Contains common classes and interfaces for SPI implementations.

See: Description

Interface Summary
IgniteSpi: This interface defines life-cycle of SPI implementation.
IgniteSpiCloseableIterator<T>: Closeable iterator.
IgniteSpiContext: SPI context provides common functionality for all SPI implementations.
IgniteSpiManagementMBean: This interface defines basic MBean for all SPI implementations.
IgniteSpiTimeoutObject: Provides possibility to schedule delayed execution, see `IgniteSpiContext.addTimeoutObject(IgniteSpiTimeoutObject)`.

Class Summary
IgniteNodeValidationResult: Result of joining node validation.
IgniteSpiAdapter: This class provides convenient adapter for SPI implementations.
IgniteSpiMBeanAdapter: This class provides convenient adapter for MBean implementations.
IgniteSpiOperationTimeoutHelper: Object that incorporates logic that determines a timeout value for the next network related operation and checks whether a failure detection timeout is reached or not.
IgniteSpiThread: This class provides convenient adapter for threads used by SPIs.
IgniteSpiThreadFactory: This class provides implementation of `ThreadFactory` factory for creating grid SPI threads.

Enum Summary
IgnitePortProtocol: Protocols supported by port processor.

Exception Summary
IgniteSpiException: Exception thrown by SPI implementations.
IgniteSpiMultiException: Grid SPI exception which may contain more than one failure.
IgniteSpiOperationTimeoutException: Kind of exception that is used when failure detection timeout is enabled for `TcpDiscoverySpi` or `TcpCommunicationSpi`.
IgniteSpiVersionCheckException: Grid SPI exception for version check failure.

Annotation Types Summary
IgniteSpiConfiguration: Annotates SPI configuration setters on whether or not it is optional.
IgniteSpiConsistencyChecked: SPIs that have this annotation present will be checked for consistency within grid.
IgniteSpiMultipleInstancesSupport: Annotates whether or not multiple instances of this SPI can be started in the same VM.
IgniteSpiNoop: Annotates `NO-OP` SPI implementations.

## Package org.apache.ignite.spi Description

Contains common classes and interfaces for SPI implementations.

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Ignite Fabric | : ver. 2.4.0
Release Date | : March 5 2018