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

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578 open issues indexed

Out of Memory when reading large parquet file Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2201 · 1 comment · Opened Jul 26, 2018
The random data generator used for tests repeats the same value over and over again Open

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

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

apache/parquet-java#2199 · Opened Jul 23, 2018
[parquet-tools] dump command shows binary values differenty than the cat or head commands Open

Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#2198 · Opened Jul 12, 2018
Unable to read a parquet file Open

Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#2196 · 1 comment · Opened Jun 29, 2018
Current block alignment logic may lead to several row groups per block Open

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

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

apache/parquet-java#2191 · Opened Jun 25, 2018
Avro RequestedProjection incompatible with Hive written data Open

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

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

apache/parquet-java#2188 · Opened Jun 20, 2018
[C++] Integrate Bloom filter into row group filter logic Open

Component: Parquet Priority: Major Type: task

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

apache/parquet-java#1522 · Opened Jun 15, 2018
[C++] Bloom filter read/write implementation Open

Component: Parquet Priority: Minor Type: task

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

apache/parquet-java#2186 · 7 comments · Opened Jun 15, 2018
[C++] Cross compatibility support with parquet-mr Open

Component: Parquet Priority: Minor Type: task

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

apache/parquet-java#1521 · 1 comment · Opened Jun 15, 2018
Statistics is not available for DECIMAL types Open

Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#2184 · 6 comments · Opened Jun 10, 2018
ParquetProperties should not use static ValuesWriterFactory Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2174 · Opened May 17, 2018
Project download page does not conform to Apache requirements Open

Component: Parquet Priority: Major Type: task

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

apache/parquet-java#2173 · Opened May 14, 2018
Parquet libraries do not follow proper semantic versioning Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2170 · 9 comments · Opened May 9, 2018
Add constructors to ProtoParquetWriter to write specs compliant Parquet Open

Component: Parquet Priority: Minor Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 15/100

apache/parquet-java#2167 · Opened May 3, 2018
Unable to read deeply nested records from Parquet file with Avro interface. Open

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

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

apache/parquet-java#2149 · 2 comments · Opened Mar 26, 2018
RLE decoding should treat 0 length runs as error Open

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

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

apache/parquet-java#2148 · Opened Mar 19, 2018
java.lang.UnsupportedOperationException: Unimplemented type: StringType Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2147 · 2 comments · Opened Mar 14, 2018
org.apache.parquet.column.values.dictionary.PlainValuesDictionary$PlainLongDictionary Open

Component: Parquet Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 15/100

apache/parquet-java#2146 · 1 comment · Opened Mar 14, 2018
Proto-Parquet cannot write a schema with an empty group Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2142 · 1 comment · Opened Mar 5, 2018
Reading big texts cause OutOfMemmory Error. How to read text partialy? Open

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

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

apache/parquet-java#2141 · Opened Feb 26, 2018
Parquet-tools cat mangles strings created by other clients Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2140 · Opened Feb 21, 2018
CLI tools for encrypted files Open

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

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

apache/parquet-java#2137 · Opened Feb 20, 2018
[parquet-mr] Implement specification-compliant floating point comparison Open

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

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

apache/parquet-java#2135 · Opened Feb 19, 2018
Parquet protobuf: List wrapper should be optional Open

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

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

apache/parquet-java#2133 · Opened Feb 14, 2018
Add differentiation of nested records with the same name Open

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

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

apache/parquet-java#2124 · Opened Jan 29, 2018
org.apache.commons.codec.binary.Base64 clash Open

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

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

apache/parquet-java#1505 · 1 comment · Opened Jan 15, 2018
Parquet Pushdown Open

Component: Parquet Component: Pig Priority: Major Type: bug

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

apache/parquet-java#2118 · Opened Jan 11, 2018
Use the same default page size across different language bindings Open

Component: Parquet Priority: Major Type: task

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

apache/parquet-java#2116 · Opened Jan 10, 2018
Off heap memory leaks with large binary fields using Snappy Open

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

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

apache/parquet-java#2114 · Opened Jan 9, 2018
Occasional corruption of parquet files , parquet writer might not be calling ParquetFileWriter->end() Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2109 · 1 comment · Opened Dec 11, 2017
Concurrent read micro benchmarks Open

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

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

apache/parquet-java#2108 · Opened Dec 8, 2017
com.fasterxml.jackson.core.jackson dependency harmonization Open

Component: Parquet Priority: Minor Type: enhancement

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

apache/parquet-java#2107 · 1 comment · Opened Dec 7, 2017
Question on pig loader read parquet file Open

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

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

apache/parquet-java#2106 · Opened Dec 7, 2017
Broken links and formatting problems in Parquet documentation Open

Component: Parquet Priority: Trivial Type: bug

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

apache/parquet-java#2104 · Opened Nov 17, 2017
Parquet Write bug - parquet data unreadable by hive or presto or spark 2.1 Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#1501 · 2 comments · Opened Nov 9, 2017
Update Java for format 2.4.0 changes Open

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

Difficulty 4/5 3-5 days Newbie friendliness 10/100

apache/parquet-java#2098 · 4 comments · Opened Oct 17, 2017
parquet-tools merge does not work nor give any error message Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2094 · Opened Oct 10, 2017
Parquet-cli convert-csv : Unknown --format option in example Open

Component: CLI Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#2093 · Opened Oct 10, 2017
Parquet-cli convert-csv : Missing option -o for output file path in examples Open

Component: CLI Component: Parquet Priority: Minor Type: bug

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

apache/parquet-java#2092 · 1 comment · Opened Oct 10, 2017
Cannot build parquet-tools as per instructions Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2091 · 5 comments · Opened Oct 10, 2017
make it easy to read and write parquet files in java without depending on hadoop Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#1497 · 6 comments · 3 reactions · Opened Oct 7, 2017
Parquet-mr project build fails with parquet format 2.3.2-SNAPSHOT Open

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

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

apache/parquet-java#2089 · 1 comment · Opened Oct 3, 2017
Reduce memory footprint for nulls caching Open

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

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

apache/parquet-java#2088 · Opened Oct 1, 2017
ParquetRecordWriter does not provide interface like getRowCount(),getRawDataSize() like org.apache.orc.Writer Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2087 · Opened Sep 28, 2017
Add Yetus InterfaceAudience annotations to Parquet Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#2086 · Opened Sep 27, 2017
A NullPointerException in DictionaryValuesWriter when writing Parquet Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2082 · 1 comment · Opened Sep 5, 2017
Parquet website pulls docs from wrong repo Open

Component: Parquet Priority: Major Type: bug

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

apache/parquet-java#2076 · Opened Jul 20, 2017
Add a configurableValueWriterFactory for parquet-hadoop module Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#2075 · 1 comment · Opened Jul 19, 2017
Support a better encoding for Parquet Dictionary Open

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

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

apache/parquet-java#2074 · Opened Jul 14, 2017
Improve the RLE encoding for Parquet Dictionary IDs Open

Component: Parquet Priority: Major Type: enhancement

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

apache/parquet-java#2073 · 4 comments · Opened Jul 14, 2017

apache/parquet-java

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