The README for parquet-mr/parquet-tools says to run locally:
`java jar ./parquet-tools-<VERSION>.jar <command> my_parquet_file.lzo.parquet`
You need a dash before "jar" or it doesn't work.
$ java jar parquet-tools-1.6.0rc3-SNAPSHOT.jar
Error: Could not find or load main class jar
Also, after the 'mvn clean package' instructions given, the jar is in ./target. That part is minor, but the "jar" vs "-jar" was hard to figure out.
When this did not work, I went looking for other tools. Didn't find any, so came back and tried harder. Please, please add that one character.