Arnaud-Nauwynck opened a new pull request, #1243:
URL: https://github.com/apache/parquet-mr/pull/1243

   see [](https://issues.apache.org/jira/browse/PARQUET-2416)
   
   this PR fix a bug in ParquetOutputFormat, which hard-coded a "new 
ParquetOutputCommitter(output, context)" with "class ParquetOutputCommitter 
extends FileOutputCommitter".
   
   By fixing this bug, using the "delegate instead of extends" design pattern, 
the bug is fixed, BUT it breaks build : the backward binary compatibility is 
indeed different, and this is on-purpose !
   
   ```
   [ERROR] Failed to execute goal 
com.github.siom79.japicmp:japicmp-maven-plugin:0.18.2:cmp (default) on project 
parquet-hadoop: There is at least one incompatibility: 
org.apache.parquet.hadoop.ParquetOutputCommitter:SUPERCLASS_REMOVED -> [Help 1]
   ```
   


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