Issues · apache/parquet-java · GitHub

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Optimize PlainValuesWriter by writing directly to ByteBuffer slabs (up to 2x encode speedup)

#3495

· iemejia opened

on Apr 19, 2026

Optimize PlainValuesReader by reading directly from ByteBuffer (12x decode speedup)

#3493

· iemejia opened

on Apr 19, 2026

`Binary.copy()` does not materialize direct `ByteBuffer`-backed values to heap, causing use-after-free

#3489

· arouel opened

on Apr 18, 2026

`ParquetFileReader` does not close previous `PageReadStore` on `readNextRowGroup()` or on `close()`

#3487

· arouel opened

on Apr 18, 2026

Avoid heap materialization for CRC32 page checksums in `ColumnChunkPageWriteStore`

Type: enhancement

#3484

· arouel opened

on Apr 17, 2026

parquet-hadoop tests fail if working behind a web proxy

Type: enhancement

#3482

· alexeyroytman opened

on Apr 16, 2026

`RequiresFallback.isCompressionSatisfying` is too aggressive with current default page size

Type: enhancement

#3479

· etseidl opened

on Apr 14, 2026

LZ4_RAW heap decompression fails on chunked `BytesInput` materialization for large pages

#3478

· arouel opened

on Apr 14, 2026

AvroSchemaConverter silently drops typed_value when converting shredded variant schemas

#3477

· nssalian opened

on Apr 14, 2026

Parquet Java vectorized module not working with newer JDKs

#3475

· iemejia opened

on Apr 13, 2026

VariantUtil.getMetadataMap reads from wrong position for non-array ByteBuffer; VariantBuilder.appendBinary mutates caller's ByteBuffer

#3471

· rayokota opened

on Apr 11, 2026

Error which block the compilation

#3468

· Yao-MR opened

on Apr 7, 2026