Convert CSV to Parquet

• Checkout https://github.com/apache/parquet-mr/tree/master/parquet-cli
• mvn clean install -DskipTests
• cd parquet-cli

$ java -cp target/classes; target/dependency/* org.apache.parquet.cli.Main convert-csv \Data.csv -o \Data.parquet

Prerequisite: HADOOP_HOME is already set in the environment