apache/parquet-java

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Apache Parquet Java

Stars: 3.1k
Forks: 1.6k
Open beginner issues: 0
Indexed issues: 580
Avg merge: 3d 12h
Merged PRs (30d): 33

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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580 open issues indexed

parquet-cli rewrite option Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#2981 · 1 comment · Opened Aug 7, 2024
Unused field in InternalParquetRecordWriter Class Open

Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 55/100

apache/parquet-java#2965 · Opened Jul 21, 2024
Create a comparator utility to compare 2 parquet files and give a clear message for the differences Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2950 · Opened Jul 11, 2024
Support Java 21 Open

Type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/parquet-java#2945 · Opened Jul 8, 2024
Out of the box support for LocalOutputFile with ParquetWriter? Open

question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#2938 · 7 comments · Opened Jul 1, 2024
Why doesn't Parquet currently support writing multiple row groups simultaneously? Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2929 · 1 comment · Opened Jun 24, 2024
Is there any actual conversion implementation for arrow and parquet? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2928 · 8 comments · 2 reactions · Opened Jun 24, 2024
Old Parquet files with wrong Compressed Size not Readable Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

apache/parquet-java#2926 · Opened Jun 23, 2024
Migrate Parquet Jira issues to GitHub Open

Component: Parquet Priority: Major Type: task

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-java#1703 · Opened Jun 22, 2024
Parquet check-stats command only supports checking BINARY type columns. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#1382 · Opened Jun 22, 2024
Bump Spotless to 2.43.0 Open

Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

apache/parquet-java#2920 · Opened Jun 19, 2024
ParquetWriter::close sometimes fail Open

Component: Java Component: Parquet Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 32/100

apache/parquet-java#1701 · 1 comment · Opened Jun 10, 2024
Upgrade merge script to run on python3 Open

Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

apache/parquet-java#2917 · Opened Jun 10, 2024
HadoopInputFile to pass down FileStatus when opening file. Open

Component: Hadoop Component: Parquet Priority: Major Type: enhancement

apache/parquet-java#2915 · 2 comments · 1 assignee · Opened Jun 8, 2024
Add usage documentation for the Java library Open

Component: Java Component: Parquet Priority: Major Type: enhancement

apache/parquet-java#2914 · 10 comments · 1 reaction · 1 assignee · Opened Jun 5, 2024
Improve Parquet IO Performance within cloud datalakes Open

Component: Hadoop Component: Java Component: Parquet Component: Testing Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2912 · 1 comment · Opened May 29, 2024
Unable to create bloomfilter when writing duplicates values for a field Open

Component: Java Component: Parquet Priority: Critical Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

apache/parquet-java#1698 · 2 comments · Opened May 28, 2024
Files opened by ParquetFileWriter’s appendFile method should to be closed correctly Open

Component: Hadoop Component: Parquet Priority: Major Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

apache/parquet-java#2908 · Opened May 18, 2024
toParquetMetadata method in ParquetMetadataConverter does not set dictionary page offset bit Open

Component: Java Component: Parquet Priority: Major Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

apache/parquet-java#2901 · Opened May 1, 2024
Upgrade ZSTD-JNI to 1.5.6-2 Open

Component: Parquet Priority: Minor Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

apache/parquet-java#2898 · Opened Apr 22, 2024
parquet-hadoop tests to work with hadoop 3.4.0 Open

Component: Hadoop Component: Parquet Priority: Major Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 20/100

apache/parquet-java#2897 · 2 comments · Opened Apr 17, 2024
Enforce unique constraints on parquet column Open

Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2894 · Opened Mar 28, 2024
parquet-avro does not support nested logical-type for avro <= 1.8 Open

Component: Parquet Priority: Minor Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#1691 · 1 comment · Opened Mar 8, 2024
Support lazy materialization of row groups in ParquetFileReader Open

Component: Parquet Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2884 · 3 comments · Opened Mar 5, 2024
Upgrade Spotless to 0.43.0 & Scala 2.12.19 Open

Component: Java Component: Parquet Priority: Critical Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

apache/parquet-java#2882 · 1 comment · Opened Mar 1, 2024
ParquetRewriter should keep SizeStatistics Open

Component: Hadoop Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 20/100

apache/parquet-java#2877 · Opened Feb 19, 2024
CLI supports printing SizeStatistics Open

Component: CLI Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 20/100

apache/parquet-java#2876 · Opened Feb 19, 2024
Add ParquetJoiner feature Open

Component: Hadoop Component: Parquet Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/parquet-java#2873 · Opened Feb 13, 2024
The page compressedSize printed by the ShowPagesCommand is actually uncompressedSize Open

Component: Parquet Priority: Minor Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

apache/parquet-java#2870 · Opened Feb 7, 2024
Encrypted parquet files can't have more than 32767 pages per chunk: 32768 Open

Component: Parquet Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#1687 · 16 comments · Opened Jan 29, 2024
Clean up temporary files when running tests Open

Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 20/100

apache/parquet-java#2866 · Opened Jan 17, 2024
honor conf "mapreduce.outputcommitter.factory.class" with PathOutputCommitterFactory in ParquetOutputFormat.getOutputCommitter Open

Component: Parquet Priority: Minor Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 25/100

apache/parquet-java#1685 · Opened Dec 22, 2023
Reuse hadoop file status and footer in ParquetRecordReader Open

Component: Hadoop Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-java#2862 · Opened Dec 21, 2023
Excessive synchronization in MemoryManager Open

Component: Hadoop Component: Parquet Priority: Major Type: bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2860 · Opened Dec 11, 2023
ParquetReader directory read using InputFile Open

Component: Hadoop Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#2856 · Opened Dec 4, 2023
Create specialized HadoopParquetReader Open

Component: Hadoop Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#2855 · Opened Dec 3, 2023
Create specialized HadoopParquetWriter Open

Component: Hadoop Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#2854 · Opened Dec 3, 2023
Remove the deprecated OriginalType Open

Component: Parquet Priority: Major Type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 25/100

apache/parquet-java#2839 · Opened Nov 15, 2023
Deprecate methods relying on Hadoop classes when alternatives using more generic Parquet interfaces are available Open

Component: Java Component: Parquet Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2838 · Opened Nov 15, 2023
Issues when using the head on a parquet file Open

Component: Parquet Priority: Major Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/parquet-java#2835 · Opened Nov 13, 2023
Add completion for parquet-tools Open

Component: Parquet Priority: Major Type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

apache/parquet-java#2834 · Opened Nov 13, 2023
NegativeArraySizeException on read for parquet files written with large strings in some cases Open

Component: Parquet Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 28/100

apache/parquet-java#2828 · 1 comment · Opened Oct 17, 2023
Fix typo in DeltaBinaryPackingValuesWriter Open

Component: Java Component: Parquet Priority: Trivial Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 35/100

apache/parquet-java#1673 · Opened Sep 29, 2023
Deprecate parquet-thrift Open

Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-java#2820 · Opened Sep 28, 2023
Avoid Hadoop interfaces and classes in codecs Open

Component: Java Component: Parquet Priority: Minor Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-java#2818 · 2 comments · Opened Sep 22, 2023
ParquetWriter/ParquetReader should parse options directly from supplied Configuration Open

Component: Parquet Priority: Minor Type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 25/100

apache/parquet-java#2816 · Opened Sep 19, 2023
appendRowGroup will loose pageIndex Open

Component: Java Component: Parquet Priority: Major Type: task

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#2808 · 6 comments · Opened Aug 22, 2023
ArrayIndexOutOfBounds exception writing parquet from Avro in Apache Hudi Open

Component: Avro Component: Java Component: Parquet Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-java#1670 · 2 comments · Opened Aug 20, 2023
Linux support Open

Component: CLI Component: Parquet Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-java#1669 · Opened Aug 11, 2023
existing column statistics can be missed Open

Component: Parquet Priority: Major Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 25/100

apache/parquet-java#2799 · Opened Jul 21, 2023

apache/parquet-java

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