Parquet is a columnar storage format that supports nested data. This provides the java implementation.
'com.twitter:parquet:1.2.2'
<dependency>
<groupId>com.twitter</groupId>
<artifactId>parquet</artifactId>
<version>1.2.2</version>
</dependency>
<dependency org="com.twitter" name="parquet" rev="1.2.2"/>
"com.twitter", "parquet", "1.2.2"