address comments

Author: pan3793

parquet-cli/README.md

@@ -31,13 +31,13 @@ You can build this project using maven:
 The build produces a shaded Jar that can be run using the `hadoop` command:
 
 ```
-hadoop jar parquet-cli-1.12.3-runtime.jar org.apache.parquet.cli.Main
+hadoop jar parquet-cli-1.16.0-runtime.jar org.apache.parquet.cli.Main
 ```
 
 For a shorter command-line invocation, add an alias to your shell like this:
 
 ```
-alias parquet="hadoop jar /path/to/parquet-cli-1.12.3-runtime.jar org.apache.parquet.cli.Main --dollar-zero parquet"
+alias parquet="hadoop jar /path/to/parquet-cli-1.16.0-runtime.jar org.apache.parquet.cli.Main --dollar-zero parquet"
 ```
 
 ### Running without Hadoop
@@ -51,7 +51,7 @@ To run from the target directory instead of using the `hadoop` command, first co
 Then, run the command-line and add `target/dependencies/*` to the classpath:
 
 ```
-java -cp 'target/parquet-cli-1.12.3.jar:target/dependency/*' org.apache.parquet.cli.Main
+java -cp 'target/parquet-cli-1.16.0.jar:target/dependency/*' org.apache.parquet.cli.Main
 ```
 
 Note that you shouldn't include the runtime jar used above into the classpath in this case.
@@ -79,6 +79,8 @@ Usage: parquet [options] [command] [command options]
 
     help
         Retrieves details on the functions of other commands
+    version
+        Print version of the Parquet CLI tool
     meta
         Print a Parquet file's metadata
     pages
@@ -126,8 +128,8 @@ Usage: parquet [options] [command] [command options]
 
   Examples:
 
-    # print information for create
-    parquet help meta
+    # print information for version
+    parquet help version
 
   See 'parquet help <command>' for more information on a specific command.
 ```

parquet-cli/src/main/java/org/apache/parquet/cli/Main.java

@@ -87,7 +87,7 @@ public class Main extends Configured implements Tool {
     this.help = new Help(jc, console);
     jc.setProgramName(DEFAULT_PROGRAM_NAME);
     jc.addCommand("help", help, "-h", "-help", "--help");
-    jc.addCommand("version", new ShowVersionCommand(console));
+    jc.addCommand("version", new ShowVersionCommand(console), "-version", "--version");
     jc.addCommand("meta", new ParquetMetadataCommand(console));
     jc.addCommand("pages", new ShowPagesCommand(console));
     jc.addCommand("dictionary", new ShowDictionaryCommand(console));