org.apache.hadoop.fs.s3a.impl.streams

Class ClassicObjectInputStreamFactory

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.fs.s3a.impl.streams.AbstractObjectInputStreamFactory

org.apache.hadoop.fs.s3a.impl.streams.ClassicObjectInputStreamFactory

All Implemented Interfaces:

Closeable, AutoCloseable, ObjectInputStreamFactory, org.apache.hadoop.fs.StreamCapabilities, org.apache.hadoop.service.Service

public class ClassicObjectInputStreamFactory
extends AbstractObjectInputStreamFactory

Factory of classic S3AInputStream instances.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.fs.s3a.impl.streams.ObjectInputStreamFactory

ObjectInputStreamFactory.StreamFactoryCallbacks

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Nested classes/interfaces inherited from interface org.apache.hadoop.fs.StreamCapabilities

org.apache.hadoop.fs.StreamCapabilities.StreamCapability

Field Summary

Fields inherited from interface org.apache.hadoop.fs.StreamCapabilities

ABORTABLE_STREAM, DROPBEHIND, HFLUSH, HSYNC, IOSTATISTICS, IOSTATISTICS_CONTEXT, PREADBYTEBUFFER, READAHEAD, READBYTEBUFFER, UNBUFFER, VECTOREDIO, VECTOREDIO_BUFFERS_SLICED

Constructor Summary

Constructors

Constructor and Description
ClassicObjectInputStreamFactory()

Method Summary

Modifier and Type	Method and Description
StreamFactoryRequirements	factoryRequirements() Get the number of background threads required for this factory.
boolean	hasCapability(String capability) Return base capabilities of all stream factories, defining what the base ObjectInputStream class does.
ObjectInputStream	readObject(ObjectReadParameters parameters) Create a new input stream.
InputStreamType	streamType() Get the input stream type.

Methods inherited from class org.apache.hadoop.fs.s3a.impl.streams.AbstractObjectInputStreamFactory

bind, callbacks

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, serviceInit, serviceStart, serviceStop, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.service.Service

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, registerServiceListener, start, stop, unregisterServiceListener, waitForServiceToStop

Constructor Detail

ClassicObjectInputStreamFactory

public ClassicObjectInputStreamFactory()

Method Detail

readObject

public ObjectInputStream readObject(ObjectReadParameters parameters)
                             throws IOException

Description copied from interface: ObjectInputStreamFactory

Create a new input stream. There is no requirement to actually contact the store; this is generally done lazily.

Parameters:

parameters - parameters.

Returns:

the input stream

Throws:

IOException - problem creating the stream.

hasCapability

public boolean hasCapability(String capability)

Description copied from class: AbstractObjectInputStreamFactory

Return base capabilities of all stream factories, defining what the base ObjectInputStream class does. This also includes the probe for stream type capability.

Specified by:

hasCapability in interface org.apache.hadoop.fs.StreamCapabilities

Overrides:

hasCapability in class AbstractObjectInputStreamFactory

Parameters:

capability - string to query the stream support for.

Returns:

true if implemented

streamType

public InputStreamType streamType()

Description copied from interface: ObjectInputStreamFactory

Get the input stream type.

Returns:

the specific stream type this factory produces.

factoryRequirements

public StreamFactoryRequirements factoryRequirements()

Get the number of background threads required for this factory.

Returns:

the count of background threads.