org.apache.flink.runtime.clusterframework.overlays

Class HadoopUserOverlay

java.lang.Object

org.apache.flink.runtime.clusterframework.overlays.HadoopUserOverlay

All Implemented Interfaces:

ContainerOverlay

public class HadoopUserOverlay
extends Object
implements ContainerOverlay

Overlays a Hadoop user context into a container.

The overlay essentially configures Hadoop's UserGroupInformation class, establishing the effective username for filesystem calls to HDFS in non-secure clusters.

In secure clusters, the configured keytab establishes the effective user.

The following environment variables are set in the container: - HADOOP_USER_NAME

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HadoopUserOverlay.Builder A builder for the HadoopUserOverlay.

Constructor Summary

Constructors

Constructor and Description
HadoopUserOverlay(org.apache.hadoop.security.UserGroupInformation ugi)

Method Summary

Modifier and Type	Method and Description
void	configure(ContainerSpecification container) Configure the given container specification.
static HadoopUserOverlay.Builder	newBuilder()

Methods inherited from class java.lang.Object

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

Constructor Detail

HadoopUserOverlay

public HadoopUserOverlay(@Nullable
                         org.apache.hadoop.security.UserGroupInformation ugi)

Method Detail

configure

public void configure(ContainerSpecification container)
               throws IOException

Description copied from interface: ContainerOverlay

Configure the given container specification.

Specified by:

configure in interface ContainerOverlay

Throws:

IOException

newBuilder

public static HadoopUserOverlay.Builder newBuilder()