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OpenAug 29, 2026
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[FEA] Deduplicate fixed-width plain parquet decoder code
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentcuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestStatus: Open.#19254 In NVIDIA/cudf;[QST] Should byte_array_view in parquet reader/writer change
cuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.questionFurther information is requestedFurther information is requestedStatus: Open.#11408 In NVIDIA/cudf;Investigate need for output as binary configuration option
bugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#11394 In NVIDIA/cudf;[FEA] category dtype support in parquet reader
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentcuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestlibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.PythonAffects Python cuDF API.Affects Python cuDF API.Status: Open.#12497 In NVIDIA/cudf;[FEA] Add Parquet and ORC unit tests based on Apache sample files
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentcuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestlibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDStestsUnit testing for projectUnit testing for projectStatus: Open.#13627 In NVIDIA/cudf;[FEA] Add GZIP compression support to parquet writer
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentcuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestlibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDSStatus: Open.#14509 In NVIDIA/cudf;[BUG] Misinterpretation of Parquet List schema with single GROUP child named "array"
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentbugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#13313 In NVIDIA/cudf;[BUG] String columns written with
fastparquetseem to be read incorrectly via CUDF's Parquet reader0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentbugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#14258 In NVIDIA/cudf;[BUG]
CompactProtocolFieldWriterdoes not write empty value string in key-value pair2 - In ProgressCurrently a work in progressCurrently a work in progressbugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#14024 In NVIDIA/cudf;[FEA] Unused variable in JNI/Java binding for
readParquet0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentfeature requestNew feature or requestNew feature or requestJavaAffects Java cuDF API.Affects Java cuDF API.Status: Open.#12031 In NVIDIA/cudf;[FEA] parquet: rle_stream for dictionary pages
cuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestPerformancePerformance related issuePerformance related issueSparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDSStatus: Open.#14950 In NVIDIA/cudf;[BUG] Loading a missing column from a Parquet file results in ArrayIndexOutOfBoundsException
bugSomething isn't workingSomething isn't workinggood first issueGood for newcomersGood for newcomersJavaAffects Java cuDF API.Affects Java cuDF API.PythonAffects Python cuDF API.Affects Python cuDF API.SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDSStatus: Open.#11278 In NVIDIA/cudf;[BUG] Malformed fixed length byte array Parquet file loads corrupted data instead of error
1 - On DeckTo be worked on nextTo be worked on nextbugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDSStatus: Open.#14104 In NVIDIA/cudf;[BUG] Special case Parquet LIST names appear to be ignored
bugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects 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 RAPIDSStatus: Open.#12043 In NVIDIA/cudf;[BUG] Backwards compatible parquet MAP_KEY_VALUE is not treated properly
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentbugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDSStatus: Open.#12044 In NVIDIA/cudf;[BUG] For certain parquet list schemas, the root PageNestingInfo struct can end up uninitialized.
bugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuePythonAffects Python cuDF API.Affects Python cuDF API.Status: Open.#14634 In NVIDIA/cudf;[BUG] Parquet column selection by name with schemas including list<struct<X, Y>> does not work.
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentbugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.PythonAffects Python cuDF API.Affects Python cuDF API.Status: Open.#14539 In NVIDIA/cudf;[FEA] Parquet reader: replace skip_rows / num_rows with start_row / end_row
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentcuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestlibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#14465 In NVIDIA/cudf;[FEA] Parquet reader code cleanup, re: nested columns vs columns with lists.
0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.proposalChange current process or codeChange current process or codeStatus: Open.#11793 In NVIDIA/cudf;[FEA] simplify
page_state_sand possibly other structures for specialized parquet kernelscuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestlibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.PerformancePerformance related issuePerformance related issueStatus: Open.#15267 In NVIDIA/cudf;[FEA] Port the logic at page_data.cu:282 to use
thread_groups and avoid the magic 32 multiples.0 - BacklogIn queue waiting for assignmentIn queue waiting for assignmentfeature requestNew feature or requestNew feature or requestgood first issueGood for newcomersGood for newcomerslibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#16235 In NVIDIA/cudf;[QST] Difference in PQ reader output with AST filters if there are
nullsin predicate col(s)?feature requestNew feature or requestNew feature or requestPythonAffects Python cuDF API.Affects Python cuDF API.questionFurther information is requestedFurther information is requestedStatus: Open.#18291 In NVIDIA/cudf;[FEA] Handle
binary decimals in the main decoder in Parquet readercuIOcuIO issuecuIO issuefeature requestNew feature or requestNew feature or requestlibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#18384 In NVIDIA/cudf;[BUG] illegal cuda memory access writing zero-row table to parquet with invalid (?)
partition_infosetbugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#17361 In NVIDIA/cudf;[BUG] Investigate the use of memory resources in Parquet stack
bugSomething isn't workingSomething isn't workingcuIOcuIO issuecuIO issuelibcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.Status: Open.#21282 In NVIDIA/cudf;