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https://issues.apache.org/jira/browse/PARQUET-2177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17609803#comment-17609803
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ASF GitHub Bot commented on PARQUET-2177:
-----------------------------------------
shangxinli commented on PR #991:
URL: https://github.com/apache/parquet-mr/pull/991#issuecomment-1258909282
LGTM
> Fix parquet-cli not to fail showing descriptions
> ------------------------------------------------
>
> Key: PARQUET-2177
> URL: https://issues.apache.org/jira/browse/PARQUET-2177
> Project: Parquet
> Issue Type: Bug
> Reporter: Kengo Seki
> Assignee: Kengo Seki
> Priority: Minor
>
> Currently, trying to show the descriptions of the 'prune' and 'masking'
> subcommands leads to NPE as follows.
> {code}
> $ 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)
> {code}
> {code}
> $ 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)
> {code}
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