ValkyrieDB is a ridiculously simple read-only key/value database designed to be fed from Hadoop/HDFS. It is modeled on ElephantDB.
It uses Thrift to provide a network interface and Krati for local persistence.
<dependencies>
<dependency>
<groupId>com.rubicon.oss</groupId>
<artifactId>valkyriedb</artifactId>
</dependency>
</dependencies>
<repositories>
<repository>
<id>samtingleff-maven-snapshot-repo</id>
<url>https://github.com/samtingleff/maven-repo/raw/master/snapshots</url>
<layout>default</layout>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
<updatePolicy>daily</updatePolicy>
</snapshots>
</repository>
</repositories>