Wonderdog provides code in both Ruby and Java to make Elasticsearch a more fully-fledged member of both the Hadoop and Wukong ecosystems. For the Java side, Wonderdog provides InputFormat and OutputFormat classes for use with Hadoop (esp. Hadoop Streaming) and Pig. For the Ruby side, Wonderdog provides extensions for wu-hadoop to make running Hadoop Streaming jobs written in Wukong against ElasticSearch easier.