tree 7c5fe253ee99c7de9d1354be897f6bfb0a045450
parent 91ef8e9bc6b8e4e0f40c0456e01251251b063362
author Kornelijus Survila <kornholijo@gmail.com> 1621818042 -0600
committer GitHub <noreply@github.com> 1621818042 -0700
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parquet: Speed up `BitReader`/`DeltaBitPackDecoder` (#325)

* parquet: Avoid temporary `BufferPtr`s in `BitReader`

From a quick test, this speeds up reading delta-packed int columns by
over 30%.

* parquet: Avoid some allocations in `DeltaBitPackDecoder`

From a quick test, it seems to decode around 10% faster overall.