[PARQUET-2177] Fix parquet-cli not to fail showing descriptions

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.13.0
• Assignee: Kengo Seki
• Reporter: Kengo Seki
• Created: 26/Aug/22 05:04
• Updated: 12/Apr/23 01:32
• Resolved: 26/Mar/23 06:02

Description

Currently, trying to show the descriptions of the 'prune' and 'masking' subcommands leads to NPE as follows.

$ java -cp 'target/parquet-cli-1.13.0-SNAPSHOT.jar:target/dependency/*' org.apache.parquet.cli.Main help prune
Exception in thread "main" java.lang.NullPointerException
	at com.beust.jcommander.JCommander$MainParameter.access$900(JCommander.java:64)
	at com.beust.jcommander.JCommander.getMainParameterDescription(JCommander.java:965)
	at org.apache.parquet.cli.Help.run(Help.java:65)
	at org.apache.parquet.cli.Main.run(Main.java:146)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
	at org.apache.parquet.cli.Main.main(Main.java:189)

$ java -cp 'target/parquet-cli-1.13.0-SNAPSHOT.jar:target/dependency/*' org.apache.parquet.cli.Main help masking
Exception in thread "main" java.lang.NullPointerException
	at com.beust.jcommander.JCommander$MainParameter.access$900(JCommander.java:64)
	at com.beust.jcommander.JCommander.getMainParameterDescription(JCommander.java:965)
	at org.apache.parquet.cli.Help.run(Help.java:65)
	at org.apache.parquet.cli.Main.run(Main.java:146)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
	at org.apache.parquet.cli.Main.main(Main.java:189)