[jira] [Created] (PARQUET-2219) ParquetFileReader throws a runtime exception when a file contains only headers and now row data

["chris stockton (Jira)" <ji...@apache.org>]

chris stockton created PARQUET-2219:
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             Summary: ParquetFileReader throws a runtime exception when a file contains only headers and now row data
                 Key: PARQUET-2219
                 URL: https://issues.apache.org/jira/browse/PARQUET-2219
             Project: Parquet
          Issue Type: Bug
          Components: parquet-mr
    Affects Versions: 1.12.1
            Reporter: chris stockton


Google BigQuery has an option to export table data to Parquet-formatted files, but some of these files are written with header data only.  When this happens and these files are opened with the ParquetFileReader, an exception is thrown:

{{RuntimeException("Illegal row group of 0 rows");}}

It seems like the ParquetFileReader should not throw an exception when it encounters such a file.

https://github.com/apache/parquet-mr/blob/master/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ParquetFileReader.java#L949



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