org.apache.gora.shims.hadoop

Class HadoopShimFactory

java.lang.Object

org.apache.gora.shims.hadoop.HadoopShimFactory

public class HadoopShimFactory
extends Object

Factory to create HadoopShim objects.

Method Summary

Methods

Modifier and Type	Method and Description
HadoopShim	getHadoopShim() Get the Hadoop shim for the Hadoop version on the class path.
String	getMajorVersion() Get the Hadoop major version number.
static HadoopShimFactory	INSTANCE() Access the HadoopShimFactory singleton.

Methods inherited from class java.lang.Object

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

Method Detail

INSTANCE

public static HadoopShimFactory INSTANCE()

Access the HadoopShimFactory singleton.

Returns:

the shared instance of HadoopShimFactory.

getHadoopShim

public HadoopShim getHadoopShim()

Get the Hadoop shim for the Hadoop version on the class path. In case it fails to obtain an appropriate shim (i.e. unsupported Hadoop version), it throws a RuntimeException. Note that this method is potentially costly.

Returns:

A newly created instance of a HadoopShim.

getMajorVersion

public String getMajorVersion()

Get the Hadoop major version number.

Returns:

The major version number of Hadoop.