[jira] [Created] (PARQUET-1937) parquet-tools class-not-found failures are silent and therefore not helpful

["john lilley (Jira)" <ji...@apache.org>]

john lilley created PARQUET-1937:
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             Summary: parquet-tools class-not-found failures are silent and therefore not helpful
                 Key: PARQUET-1937
                 URL: https://issues.apache.org/jira/browse/PARQUET-1937
             Project: Parquet
          Issue Type: Bug
          Components: parquet-mr
    Affects Versions: 1.11.1
         Environment: I've tried this on both CentOS7 and Windows 10, using JDK 1.8.0_211

 
            Reporter: john lilley


If you download a parquet-tools jar from e.g. maven central and simply run it without the "hadoop" command prefix:

{{[jlilley@rpb-dev-cent7-1 ~]$ wget https://repo1.maven.org/maven2/org/apache/parquet/parquet-tools/1.11.1/parquet-tools-1.11.1.jar}}
{{...}}

{{[jlilley@rpb-dev-cent7-1 ~]$ java -jar parquet-tools-1.11.1.jar --help}}
{{[jlilley@rpb-dev-cent7-1 ~]$}}

it will fail because the hadoop dependencies are missing, and will fail silently because System.out and System.err have been replaced with VoidStream:

{{System.setOut(VoidStream);}}
{{System.setErr(VoidStream);}}

Because of this, the missing-class exceptions are not reported and user is left scratching head and wondering what happened.  It is unclear why the message goes unreported, because the exception _should_ be printed to Main.err by die()


{{ } catch (Throwable th) {}}
{{   if (debug) th.printStackTrace(Main.err);}}
{{   die(th, false, name, command);}}
{{ }}}

 



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