Added BufferedStream for reading from DeflateStream - reduces loading…

[martintomasek]

Fixes issue #5913
Issue from .NET runtime: dotnet/runtime#39233 (comment)

Buffered reader around the binary reader will significantly improve loading time of bigger ML models using .NET/.NET Core runtime.

[codecov]

Codecov Report

Merging #5924 (39c066c) into main (6ae2cff) will increase coverage by 0.15%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #5924      +/-   ##
==========================================
+ Coverage   68.19%   68.35%   +0.15%     
==========================================
  Files        1142     1142              
  Lines      242367   244071    +1704     
  Branches    25355    25861     +506     
==========================================
+ Hits       165287   166835    +1548     
- Misses      70400    70549     +149     
- Partials     6680     6687       +7     

Flag	Coverage Δ
Debug	68.35% <100.00%> (+0.15%)	⬆️
production	62.98% <100.00%> (+0.10%)	⬆️
test	88.72% <ø> (+0.16%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rosoft.ML.Data/DataLoadSave/Binary/BinaryLoader.cs	63.17% <100.00%> (+0.03%)	⬆️
...ansforms/PermutationFeatureImportanceExtensions.cs	92.17% <0.00%> (-3.71%)	⬇️
.../Microsoft.ML.Data/Prediction/CalibratorCatalog.cs	92.73% <0.00%> (-1.08%)	⬇️
...rosoft.Data.Analysis/ArrowStringDataFrameColumn.cs	63.54% <0.00%> (-0.47%)	⬇️
...c/Microsoft.ML.FastTree/Dataset/SegmentIntArray.cs	0.00% <0.00%> (ø)
...soft.ML.Transforms/Text/WordEmbeddingsExtractor.cs	86.87% <0.00%> (ø)
...osoft.Data.Analysis.Tests/DataFrameGroupByTests.cs	100.00% <0.00%> (ø)
...soft.ML.Tests/PermutationFeatureImportanceTests.cs	100.00% <0.00%> (ø)
...L.FastTree/TreeEnsembleFeaturizationTransformer.cs	100.00% <0.00%> (ø)
...st/Microsoft.Data.Analysis.Tests/DataFrameTests.cs	99.45% <0.00%> (+0.01%)	⬆️
... and 16 more

[michaelgsharp]

Sorry for my delay. Looks good to me. A couple test projects had some intermittent failures, so I have retriggered those. Will merge this in as soon as they complete.

[michaelgsharp]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).