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 23h
Merged PRs (30d): 30

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 20, 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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578 open issues indexed

Improve the creation of ExecutorService when reading footers Open

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

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

apache/parquet-java#2071 · Opened Jul 11, 2017
Parquet Combine Input format for MapReduce job Open

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

Difficulty 4/5 3-5 days Newbie friendliness 38/100

apache/parquet-java#2070 · Opened Jul 7, 2017
Impossible to read thrift object from parquet file if it has List<Enum> field that was removed from thrift schema. Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2069 · 1 comment · Opened Jun 27, 2017
parquet-mr must handle statistics in files written by parquet-cpp Open

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

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

apache/parquet-java#2063 · Opened Jun 2, 2017
bzip2 compression Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#2062 · 2 comments · Opened May 30, 2017
ColumnChunkPageWriter uses only heap memory. Open

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

Difficulty 4/5 3-5 days Newbie friendliness 42/100

apache/parquet-java#2060 · 6 comments · Opened May 26, 2017
Cannot read row group larger than 2GB Open

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

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

apache/parquet-java#2057 · 2 comments · Opened May 11, 2017
Corrupt statistics test should include int96 Open

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

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

apache/parquet-java#2056 · Opened May 3, 2017
Parquet file can not be read properly when it starts with an underscore Open

Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#2055 · Opened May 3, 2017
Missing field id support in parquet metadata Open

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

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

apache/parquet-java#2051 · 5 comments · Opened Apr 12, 2017
Mac build parquet failed Open

Component: Parquet Priority: Major Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 30/100

apache/parquet-java#2050 · 2 comments · Opened Apr 12, 2017
Getting Vistar Media Added to the Adopters page Open

Component: Parquet Priority: Minor Type: enhancement

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

apache/parquet-java#2047 · Opened Mar 23, 2017
C++: Check in release that the correct author is set in git Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#1485 · Opened Mar 11, 2017
GroupColumnIO.getFirst() doesn't check for empty groups Open

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

Difficulty 4/5 3-5 days Newbie friendliness 42/100

apache/parquet-java#2044 · Opened Feb 23, 2017
ParquetFileWriter.appendFile does not close file handle - resource leak Open

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

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

apache/parquet-java#2039 · Opened Feb 8, 2017
Min/Max record counts for block size checks are not configurable Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#2038 · Opened Feb 8, 2017
ParquetWriter.getDataSize NullPointerException after closed Open

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

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

apache/parquet-java#2037 · 6 comments · Opened Feb 3, 2017
parquet-avro logical type support broke ability to use avro reflection with generics. Open

Component: Avro Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#1482 · Opened Feb 1, 2017
ParquetMetadata.fromJSON method doesn't work Open

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

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

apache/parquet-java#1481 · Opened Feb 1, 2017
Make MessageType serializable Open

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

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

apache/parquet-java#2035 · Opened Jan 30, 2017
Efficient storage for several INT_8 and INT_16 Open

Component: Parquet Priority: Minor Type: enhancement

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

apache/parquet-java#2034 · 6 comments · Opened Jan 26, 2017
[CPP] Unable to read files written by parquet-cpp from parquet-tools Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2033 · 12 comments · Opened Jan 24, 2017
Corrupt Parquet Files Open

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

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

apache/parquet-java#2032 · Opened Jan 15, 2017
The link to "Google Hangout" on parquet.apache.org is broken Open

Component: Parquet Priority: Major Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 45/100

apache/parquet-java#2026 · 1 comment · Opened Dec 16, 2016
Delta Encoding is not used when dictionary enabled Open

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

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

apache/parquet-java#2024 · 7 comments · Opened Dec 12, 2016
Implement BytesWritable in DataWritableWriter Class in parquet Open

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

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

apache/parquet-java#1477 · 1 comment · Opened Dec 12, 2016
Skip the storage of repetition level and definition level for all-null column Open

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

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

apache/parquet-java#2022 · 5 comments · Opened Dec 6, 2016
Close Parquet github account to avoid confusion Open

Component: Parquet Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 15/100

apache/parquet-java#2020 · 2 comments · Opened Dec 5, 2016
ParquetOutputFormat should support custom OutputCommitter Open

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

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

apache/parquet-java#2016 · 1 comment · Opened Nov 23, 2016
Deprecate the "strict" argument in MessageType.union() Open

Component: Java Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#2006 · Opened Oct 18, 2016
Parquet tools cat/head parity, small fixes Open

Component: Parquet Priority: Trivial Type: bug

Difficulty 5/5 Over a week Newbie friendliness 10/100

apache/parquet-java#2003 · 1 comment · Opened Oct 14, 2016
Website is very out of date Open

Component: Parquet Priority: Major Type: task

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

apache/parquet-java#1996 · Opened Sep 9, 2016
clean up abandoned PRs Open

Component: Parquet Priority: Major Type: task

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

apache/parquet-java#1470 · Opened Sep 8, 2016
ProtoMessageConverter fails for unknown proto fields Open

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

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

apache/parquet-java#1993 · 1 comment · Opened Aug 30, 2016
Configure the encoding used by ValueWriters Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#1989 · 3 comments · Opened Aug 19, 2016
Allow for custom compression codecs Open

Component: Parquet Priority: Minor Type: enhancement

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

apache/parquet-java#1988 · 6 comments · Opened Aug 15, 2016
Quoted identifiers in column names Open

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

Difficulty 4/5 3-5 days Newbie friendliness 38/100

apache/parquet-java#1987 · 3 comments · Opened Aug 15, 2016
parquet depends on hadoop-lzo, which requires Twitter's Maven repo Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#1977 · 1 reaction · Opened Jul 4, 2016
Parquet file in invalid state while writing to S3 from EMR Open

Component: Parquet Priority: Blocker Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

apache/parquet-java#1971 · 9 comments · Opened Jun 13, 2016
Not able to store int or boolean from Pig to Parquet Open

Component: Parquet Component: Pig Priority: Trivial Type: bug

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

apache/parquet-java#1965 · Opened Apr 19, 2016
Parquet silently discards decimal values if they do not fit in declared type Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#1960 · Opened Apr 6, 2016
mandatory status of avro columns ignored Open

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

Difficulty 3/5 1-2 days Newbie friendliness 38/100

apache/parquet-java#1959 · Opened Mar 31, 2016
Different RLE Encoding Specification Open

Component: Parquet Priority: Trivial Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 30/100

apache/parquet-java#1958 · 4 comments · Opened Mar 29, 2016
Boolean format in Plain Decoder Open

Component: Parquet Priority: Trivial Type: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 42/100

apache/parquet-java#1957 · 6 comments · Opened Mar 28, 2016
Write parquet to STDOUT Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#1955 · 2 comments · Opened Mar 24, 2016
Enums are incorrectly handled by parquet-avro when using GenericRecords Open

Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#1952 · Opened Mar 5, 2016
Recursive Thrift Data Structure Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#1951 · Opened Mar 3, 2016
Make writeAllFields more efficient in proto-parquet component Open

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

Difficulty 4/5 3-5 days Newbie friendliness 30/100

apache/parquet-java#1944 · Opened Feb 16, 2016
Add Brotli compression to Parquet Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#1940 · 1 comment · Opened Feb 10, 2016
Integrate asan into pre commit hook Open

Component: Parquet Priority: Major Type: task

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

apache/parquet-java#1936 · Opened Feb 2, 2016

apache/parquet-java

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