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I tried opening a parquet file created in pandas using LZ4 compression, and the viewer failed to open it.
See error inside
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Lz4Raw not supported
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Something went wrong (CTRL+C to copy):
System.NotSupportedException: Lz4Raw not supported
at Parquet.File.Compressor.ToCodec(CompressionMethod method)
at Parquet.File.Compressor.Decompress(CompressionMethod method, ReadOnlySpan`1 input, Int32 outLength)
at Parquet.File.DataColumnReader.ReadPageDataAsync(PageHeader ph)
at Parquet.File.DataColumnReader.ReadDictionaryPage(PageHeader ph, PackedColumn pc)
at Parquet.File.DataColumnReader.ReadAsync(CancellationToken cancellationToken)
at ParquetViewer.Engine.ParquetEngine.ReadPrimitiveField(DataTableLite dataTable, ParquetRowGroupReader groupReader, Int32 rowBeginIndex, ParquetSchemaElement field, Int64 skipRecords, Int64 readRecords, Boolean isFirstColumn, CancellationToken cancellationToken, IProgress`1 progress)
at ParquetViewer.Engine.ParquetEngine.ProcessRowGroup(DataTableLite dataTable, ParquetRowGroupReader groupReader, Int64 skipRecords, Int64 readRecords, CancellationToken cancellationToken, IProgress`1 progress)
at ParquetViewer.Engine.ParquetEngine.PopulateDataTable(DataTableLite dataTable, ParquetReader parquetReader, Int64 offset, Int64 recordCount, CancellationToken cancellationToken, IProgress`1 progress)
at ParquetViewer.Engine.ParquetEngine.ReadRowsAsync(List`1 selectedFields, Int32 offset, Int32 recordCount, CancellationToken cancellationToken, IProgress`1 progress)
at ParquetViewer.MainForm.<>c__DisplayClass33_0.<<LoadFileToGridview>b__1>d.MoveNext()
--- End of stack trace from previous location ---
at ParquetViewer.MainForm.LoadFileToGridview()
at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)
at InvokeStub_SendOrPostCallback.Invoke(Object, Span`1)
at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
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OK
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Describe the feature you'd like to be added to Parquet Viewer
LZ4 compression is quite common in certain domains, and it would be great if the viewer could support such files.
Share why this feature would be a good addition to the utility
Will improve usability.
The text was updated successfully, but these errors were encountered:
I tried opening a parquet file created in pandas using LZ4 compression, and the viewer failed to open it.
See error inside
Describe the feature you'd like to be added to Parquet Viewer
LZ4 compression is quite common in certain domains, and it would be great if the viewer could support such files.
Share why this feature would be a good addition to the utility
Will improve usability.
The text was updated successfully, but these errors were encountered: