Parquet is a columnar storage format that supports nested data. This provides the java implementation.
'com.twitter:parquet:1.6.0rc4'
<dependency>
<groupId>com.twitter</groupId>
<artifactId>parquet</artifactId>
<version>1.6.0rc4</version>
</dependency>
<dependency org="com.twitter" name="parquet" rev="1.6.0rc4"/>
"com.twitter", "parquet", "1.6.0rc4"