These Parquet files were created by modifying Impala's HdfsParquetTableWriter.

String Data
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These files have a single nullable string column 's'.

dict-encoded-negative-len.parq: a single dictionary-encoded value with a negative length.
dict-encoded-out-of-bounds.parq: a single dictionary-encoded value with a length past end of page.
plain-encoded-negative-len.parq: a single plain-encoded value with a negative length.
plain-encoded-out-of-bounds.parq: a single plain-encoded value with a length past end of page.