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

Class AnalyticsStreamFactory

java.lang.Object

org.apache.hadoop.service.AbstractService

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

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

All Implemented Interfaces:

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

public class AnalyticsStreamFactory
extends AbstractObjectInputStreamFactory

A factory for AnalyticsStream. This class is instantiated during initialization of S3AStore, if fs.s3a.input.stream.type is set to Analytics.

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
AnalyticsStreamFactory()

Method Summary

Modifier and Type	Method and Description
void	bind(FactoryBindingParameters factoryBindingParameters) Bind to the callbacks.
StreamFactoryRequirements	factoryRequirements() Calculate Return StreamFactoryRequirements.
ObjectInputStream	readObject(ObjectReadParameters parameters) Create a new input stream.
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStop()
InputStreamType	streamType() Get the input stream type.

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

callbacks, hasCapability

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, serviceStart, 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

AnalyticsStreamFactory

public AnalyticsStreamFactory()

Method Detail

serviceInit

protected void serviceInit(org.apache.hadoop.conf.Configuration conf)
                    throws Exception

Overrides:

serviceInit in class org.apache.hadoop.service.AbstractService

Throws:

Exception

bind

public void bind(FactoryBindingParameters factoryBindingParameters)
          throws IOException

Description copied from class: AbstractObjectInputStreamFactory

Bind to the callbacks.

The base class checks service state then stores the callback interface.

Specified by:

bind in interface ObjectInputStreamFactory

Overrides:

bind in class AbstractObjectInputStreamFactory

Parameters:

factoryBindingParameters - parameters for the factory binding

Throws:

IOException - if IO problems.

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.

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()

Calculate Return StreamFactoryRequirements.

Returns:

a positive thread count.

serviceStop

protected void serviceStop()
                    throws Exception

Overrides:

serviceStop in class org.apache.hadoop.service.AbstractService

Throws:

Exception