org.janusgraph.hadoop.config

Class HBaseAuthHelper

java.lang.Object

org.janusgraph.hadoop.config.HBaseAuthHelper

public class HBaseAuthHelper
extends Object

This class is a hack to support HBase Digest-MD5 token authentication for MapReduce jobs. HBase's Digest-MD5 token authentication is used when a MR job needs to talk to a HBase cluster secured by Kerberos. This class uses reflection to avoid linking against HBase classes that might not be on the classpath at runtime (e.g. when running JanusGraph-HBase on Cassandra). Its methods log errors but otherwise serve as noops if HBase is not available or if reflection fails for some other reason.

Constructor Summary

Constructors

Constructor and Description
HBaseAuthHelper()

Method Summary

Modifier and Type	Method and Description
static void	setHBaseAuthToken(org.apache.hadoop.conf.Configuration configuration, org.apache.hadoop.mapreduce.Job job)
static org.apache.hadoop.conf.Configuration	wrapConfiguration(org.apache.hadoop.conf.Configuration inner)

Methods inherited from class java.lang.Object

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

Constructor Detail

HBaseAuthHelper

public HBaseAuthHelper()

Method Detail

wrapConfiguration

public static org.apache.hadoop.conf.Configuration wrapConfiguration(org.apache.hadoop.conf.Configuration inner)

setHBaseAuthToken

public static void setHBaseAuthToken(org.apache.hadoop.conf.Configuration configuration,
                                     org.apache.hadoop.mapreduce.Job job)
                              throws IOException

Throws:

IOException