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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