List view

[FEA] Optimize Parquet's <code>decode_page_data_generic</code> loop iterations for non-lists and chunked reads

feature requestNew feature or requestNew feature or request

improvementImprovement / enhancement to an existing functionImprovement / enhancement to an existing function

Status: Open.

Enhancement

#19735 In rapidsai/cudf;

· mhaseeb123 opened on Aug 19, 2025

[BUG] Race condition in PQ decoder while decoding PLAIN strings

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

Status: Open.

#19632 In rapidsai/cudf;

· mhaseeb123 opened on Aug 8, 2025

[FEA] Deduplicate fixed-width plain parquet decoder code

1 - On DeckTo be worked on nextTo be worked on next

Status: Open.

Enhancement

#19254 In rapidsai/cudf;

· mhaseeb123 opened on Jun 30, 2025

[FEA] Return footer when table writer closed.

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#18886 In rapidsai/cudf;

· liurenjie1024 opened on May 20, 2025

[QST] Should byte_array_view in parquet reader/writer change

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

questionFurther information is requestedFurther information is requested

Status: Open.

#11408 In rapidsai/cudf;

· hyperbolic2346 opened on Jul 29, 2022

Investigate need for output as binary configuration option

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

Status: Open.

#11394 In rapidsai/cudf;

· hyperbolic2346 opened on Jul 28, 2022

[FEA] category dtype support in parquet reader

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

PythonAffects Python cuDF API.Affects Python cuDF API.

Status: Open.

#12497 In rapidsai/cudf;

· mattf opened on Jan 7, 2023

[FEA] Add Parquet and ORC unit tests based on Apache sample files

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

testsUnit testing for projectUnit testing for project

Status: Open.

#13627 In rapidsai/cudf;

· GregoryKimball opened on Jun 27, 2023

[FEA] Increase reader throughput by pipelining IO and compute

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#13828 In rapidsai/cudf;

· GregoryKimball opened on Aug 7, 2023

[FEA] Add GZIP compression support to parquet writer

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#14509 In rapidsai/cudf;

· GregoryKimball opened on Nov 28, 2023

[BUG] Misinterpretation of Parquet List schema with single GROUP child named "array"

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

Status: Open.

#13313 In rapidsai/cudf;

· mythrocks opened on May 9, 2023

[BUG] String columns written with <code>fastparquet</code> seem to be read incorrectly via CUDF's Parquet reader

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

Status: Open.

#14258 In rapidsai/cudf;

· mythrocks opened on Oct 5, 2023

[BUG] <code>CompactProtocolFieldWriter</code> does not write empty value string in key-value pair

2 - In ProgressCurrently a work in progressCurrently a work in progress

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

Status: Open.

#14024 In rapidsai/cudf;

· ttnghia opened on Aug 31, 2023

[FEA] Unused variable in JNI/Java binding for <code>readParquet</code>

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

feature requestNew feature or requestNew feature or request

JavaAffects Java cuDF API.Affects Java cuDF API.

Status: Open.

#12031 In rapidsai/cudf;

· ttnghia opened on Oct 31, 2022

[FEA] Add variable bit-width keys and improved key order for Parquet dict pages

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#13995 In rapidsai/cudf;

· abellina opened on Aug 29, 2023

[FEA] Pinned memory pools for parquet decode

0 - BlockedCannot progress due to external reasonsCannot progress due to external reasons

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

PerformancePerformance related issuePerformance related issue

PythonAffects Python cuDF API.Affects Python cuDF API.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#14314 In rapidsai/cudf;

· abellina opened on Oct 23, 2023

[FEA] parquet: rle_stream for dictionary pages

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

PerformancePerformance related issuePerformance related issue

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#14950 In rapidsai/cudf;

· abellina opened on Feb 1, 2024

[BUG] Loading a missing column from a Parquet file results in ArrayIndexOutOfBoundsException

bugSomething isn't workingSomething isn't working

good first issueGood for newcomersGood for newcomers

JavaAffects Java cuDF API.Affects Java cuDF API.

PythonAffects Python cuDF API.Affects Python cuDF API.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#11278 In rapidsai/cudf;

· jlowe opened on Jul 15, 2022

[BUG] Malformed fixed length byte array Parquet file loads corrupted data instead of error

1 - On DeckTo be worked on nextTo be worked on next

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#14104 In rapidsai/cudf;

· jlowe opened on Sep 13, 2023

[FEA] Enable Page-level filtering based on the ColumnIndex feature from parquet 1.11

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

PythonAffects Python cuDF API.Affects Python cuDF API.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#9269 In rapidsai/cudf;

· revans2 opened on Sep 22, 2021

[BUG] Special case Parquet LIST names appear to be ignored

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

PythonAffects Python cuDF API.Affects Python cuDF API.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#12043 In rapidsai/cudf;

· revans2 opened on Nov 1, 2022

[BUG] Backwards compatible parquet MAP_KEY_VALUE is not treated properly

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

PythonAffects Python cuDF API.Affects Python cuDF API.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

#12044 In rapidsai/cudf;

· revans2 opened on Nov 1, 2022

[FEA] Implement a templated parquet decoding kernel suitable for reuse in micro-kernel optimization approach.

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

PerformancePerformance related issuePerformance related issue

Status: Open.

#14953 In rapidsai/cudf;

· nvdbaranec opened on Feb 1, 2024

[BUG] For certain parquet list schemas, the root PageNestingInfo struct can end up uninitialized.

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

PythonAffects Python cuDF API.Affects Python cuDF API.

Status: Open.

#14634 In rapidsai/cudf;

· nvdbaranec opened on Dec 14, 2023

[BUG] Parquet column selection by name with schemas including list&lt;struct&lt;X, Y&gt;&gt; does not work.

0 - BacklogIn queue waiting for assignmentIn queue waiting for assignment

bugSomething isn't workingSomething isn't working

cuIOcuIO issuecuIO issue

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

PythonAffects Python cuDF API.Affects Python cuDF API.

Status: Open.

#14539 In rapidsai/cudf;

· nvdbaranec opened on Nov 30, 2023